🥇 Top 10 | Best Pilot Pens of 2025

Office Supplies

Top 10 Best Pilot Pens 2025

Options considered: 40

Country: Philippines

Last updated: February 2025

Ranking criteria: durability, ink flow, comfort in hand, variety of colors and tip sizes available

Buyer's remorse summary: the most common issues that customers have with their Pilot Pens are typically related to Ink flow and consistency , Ink smudging or smearing , Durability and tip strength and Cap fitting securely .

We compiled the list of the most popular Pilot Pens of 2025 that have received the fewest complaints in these categories.

Sort by:

Best for most

Pilot

Pilot Gtec Signpen 0.4 0.3 G-Tec Gtech

About

This rollerball pen stands out with its ultra-fine tip, making it perfect for precise writing and de... read more

Why we recommend it

Ultra-fine rollerball pen
Ideal for fine, precise writing
Suitable for detailed illustration, graphs, and drawings

SM Stationery

Pilot BP-1RT Retractable Ballpoint Pen 0.7mm Pack of 3

About

This retractable ballpoint pen offers a smooth writing experience with its 0.7mm tip and rubber grip... read more

Why we recommend it

Retractable 0.7mm tip for precise writing
Rubber grip for comfortable and smooth writing experience
Comes in a pack of 3 for convenience
expand 3 more

Pilot G-tec Gtec Sign Pen C4 / C3 Gel Pen

About

This gel pen offers two available points for fine, precise writing. It is perfect for various applic... read more

Why we recommend it

Available in two points sizes: 0.4 and 0.3
Ideal for schools, offices, and precise writing applications
Authentic Pilot pen imported from Japan

Pilot

PILOT BP145F Retractable Ballpen Refillable, Fine Point, Black

About

This retractable ballpoint pen features a stainless steel tip, durable construction, and a comfortab... read more

Why we recommend it

Refillable ballpoint pen
Fine point tip
Stainless steel tip and tungsten carbide ball for durability
expand 8 more

Budget option

Pilot

Pilot Retractable Ballpoint Pens, Fine Tip, Assorted Colors (Pack of 3

About

This product stands out with its smooth and fine writing, durable design, and retractable feature. I... read more

Why we recommend it

Retractable ballpoint pens
Fine tip size of 0.7mm
Assorted colors (black, blue, red)
expand 6 more

Pilot

Pilot Black Retractable Ballpen - Set of 12 Fine Pens

About

This set of 12 fine ballpoint pens in black offers a durable design, retractable feature, and authen... read more

Why we recommend it

Set of 12 fine ballpoint pens
Retractable design for convenience
0.7mm tip for precise writing
expand 4 more

Pilot

Pilot Acroball Pen Set - Fine and Extra Fine

About

This pen set offers a smooth writing experience with its fine and extra fine tips. It also features ... read more

Why we recommend it

Authentic Pilot Pen
Fine 0.5 and Extra Fine 0.7 tip sizes
Available in Black, Blue, Red, Green, and Purple colors
expand 3 more

Pilot

Pilot V5/V7 Hi-Techpoint Retractable Rollerball Pen

About

Experience effortless writing with a precision needle-point tip that ensures smooth, skip-free lines... read more

Why we recommend it

Pilot Hi-Tecpoint V5 / V7 RT Retractable Rollerball Pen
Available in 0.5mm and 0.7mm tip sizes
Popular choice among rollerball pen users
expand 4 more

Pilot

Pilot FriXion Ball Clicker Erasable Gel Pen, 0.5 mm

About

Experience error-free writing with this innovative pen that combines vibrant, smooth ink with a uniq... read more

Why we recommend it

Retractable design for convenience and ease of use.
Erasable gel ink allows for writing, erasing, and rewriting without damaging documents.
Unique thermo-sensitive ink formula that disappears with erasing friction.
expand 6 more

Pilot

Pilot Hi-Tec-C Coleto 3 Color Barrel Pen

About

This customizable pen features superior bio-polymer gel ink and a super fine point, perfect for deta... read more

Why we recommend it

Customizable pen body that accommodates either 3 or 5 refills.
Compatible with Pilot Hi-Tec C Coleto refills for personalized writing experience.
Designed for fine art drawing, Chinese characters, and precise writing for users with small handwriting.
expand 3 more

Pilot

1pc Pilot GTEC Pen 0.3 and 0.4 Black, Red and Blue

About

This authentic pen features a precise needle-point tip, bio-polymer ink, and ultra fine and micro fi... read more

Why we recommend it

Authentic Pilot Pen
Precise needle-point tip
Bio-polymer ink
expand 3 more

Pilot V5 Hi-Techpoint Gel Pen - 0.5mm, Various Colors

About

Experience smooth writing with a precision 0.5mm point, vibrant liquid ink in various colors, and a ... read more

Why we recommend it

Ink Type: Liquid-Ink for smooth writing experience
Writing Point: 0.5mm for precise lines
Available Colors: Black, Blue, Green, and Red
expand 2 more

Pilot

Pilot Hi-Tec- C Coleto 3 Color Barrel

About

This customizable pen barrel offers vibrant colors, a comfortable grip, and the ability to fit multi... read more

Why we recommend it

Authentic Pilot Pen
Multi-pen and Refillable
Vibrant colors
expand 5 more

Pilot

Pilot Hi-Tecpoint V5 / V7 Liquid Ink Rollerball pen Sign Pen

About

This pen offers an exceptional writing experience with its smooth and precise lines, vibrant ink col... read more

Why we recommend it

Free-flowing and vibrant coloured liquid ink
Cap for easy storage and protection
Ultra-precise lines for neat and clean writing
expand 1 more

SM Stationery

Pilot C3 GTECH Pen Black

About

This pen stands out for its ultra-fine tip, skip-free writing, and refillable feature. Its bio polym... read more

Why we recommend it

Ultra-fine 0.3mm tip for precise writing
Bio polymer ink ensures smooth and skip-free writing
Refillable design for long-lasting use
expand 1 more

Pilot

Pilot BAB-15F-W Acroball White Series Pen Fine 0.7

About

Experience vibrant writing with a smooth, fluid feel and ergonomic design. Its retractable tip ensur... read more

Why we recommend it

Smooth writing experience with vivid, oil-based black ink
Elegant design with bright color accents
Ergonomic rubber grip for enhanced control and comfort
expand 3 more

Pilot

Pilot Acroball 300 Retractable Ballpen - BLACK Ink - 0.5

About

This retractable ballpen offers a premium writing experience with its fine 0.5mm point and elegant d... read more

Why we recommend it

Authentic Pilot pen
Black ink
Fine 0.5mm tip
expand 5 more

Pilot

Pilot Frixion Erasable Needle Point Ballpoint Pen 0.5/0.4

About

Experience precise writing with erasable ink that vanishes without residue, while its eco-friendly d... read more

Why we recommend it

Combines erasable gel ink with a stylish capped pen body and precise 0.5 mm needle-tip point.
Smudge-resistant colored leads that are easy to erase.
Ink disappears cleanly without using up the eraser or creating dust or smearing.
expand 4 more

Pilot

Pilot Juice Up Gel Pen 0.4mm- 1pc

About

This sleek and stylish pen features smooth-flowing ink, a unique synergy tip, comfortable grip, and ... read more

Why we recommend it

Sleek and stylish design
Smooth-flowing ink
Waterproof and fade-resistant
expand 5 more

SM Stationery

Pilot Juice Gel Pen 0.5mm

About

Experience smooth writing with high-quality gel ink that flows effortlessly. The comfortable grip an... read more

Why we recommend it

High-quality Japanese gel ink for smooth writing experience
Click-top design for convenient use
Comfortable grip for extended writing sessions
expand 2 more

Pilot

Pilot Juice Up Gel Pen 0.3mm- 1pc

About

This gel pen stands out with its sleek and stylish body, smooth-flowing ink, waterproofness, fade-re... read more

Why we recommend it

Sleek and stylish design
Smooth-flowing ink
Waterproof and fade-resistant
expand 5 more

Pilot

Pilot BP-S Ballpen Fine 0.7mm

About

Experience effortless writing with a balanced design and comfortable grip. The clear barrel lets you... read more

Why we recommend it

Classic ballpoint pen design with a color-coded cap and pocket clip
Clear barrel for easy visibility of ink supply
Grooved and balanced design for comfortable writing
expand 5 more

Pilot

Pilot Acroball Pen Set - Fine Point - Assorted Colors

About

This pen set offers an authentic writing experience with its fine 0.7mm point, ultra-smooth ink, and... read more

Why we recommend it

Authentic Pilot pen
Set includes 6 pens in assorted colors
Fine 0.7mm point for precise writing
expand 2 more

Pilot

Pilot Acro 300 Misty Series 0.3mm Ballpoint Pen

About

Experience effortless writing with low-viscosity ink that ensures smooth, skip-free strokes. The sta... read more

Why we recommend it

Utilizes low-viscosity Acro ink for smooth writing
0.3mm stainless steel tip for micro fine precision
Effortless, skip-free writing experience
expand 2 more

Pilot

Pilot Juice Gel Pen - 0.5mm/0.7mm Assorted Colors

About

Experience vibrant, water-resistant ink that writes smoothly on various surfaces, including dark pap... read more

Why we recommend it

Available in 0.5mm and 0.7mm tip sizes for versatile writing options.
Features a retractable design for convenience and portability.
Utilizes water-resistant pigment-based gel ink for smooth writing.
expand 5 more

Pilot

Pilot Ballpen BPS 0.7mm Sold Per Piece

About

Experience smooth, effortless writing with a precision 0.7mm tip available in vibrant colors. Ideal ... read more

Why we recommend it

Available in multiple colors: Blue, Black, Red, and Green
Features a 0.7mm tip for smooth writing
Sold individually for convenience
expand 1 more

Pilot

Pilot Acroball M Series Ballpoint Pen 0.5mm- 1pc

About

This pen features a retractable design, oil-based ink for smooth writing, and a patented grip for a ... read more

Why we recommend it

0.5mm ballpoint pen with all black ink
Genuine Pilot Japan product
Retractable design
expand 5 more

Pilot

Pilot Gtec C4 5 Color Signpen Set

About

Experience vibrant creativity with this versatile 5-color set featuring fine 0.4mm tips. Perfect for... read more

Why we recommend it

Includes five vibrant colors: Black, Blue, Red, Green, and Violet.
Features a fine 0.4mm tip for precise writing and detailing.
Ideal for various applications, including note-taking, journaling, and art projects.
expand 2 more

Pilot

Pilot Dr. Grip Ballpoint Pen White Series - Black Ink

About

This pen stands out for its ergonomic design and smooth writing experience. The wide, double layered... read more

Why we recommend it

Authentic Pilot Pen
Ergonomic design for comfortable writing
Smooth black ink for effortless writing
expand 4 more

Pilot

Pilot BL-GC4 G-TEC 0.4 Gel Pen | Sold per pc

About

Experience unparalleled writing comfort and precision with this gel pen, featuring ultra-smooth ink ... read more

Why we recommend it

Smooth and fluid writing experience
Ultra-soft gel ink for comfort
Available in multiple ink colors
expand 4 more

Pilot

Pilot G-Tec Sign Pen C4 0.4mm / C3 0.3mm

About

This pen offers the perfect combination of precision, vibrant colors, and smear-proof ink. Its textu... read more

Why we recommend it

Extremely fine and intricate writing
No feathering or smearing
Smear-proof bio-polymer ink
expand 2 more

(scroll me)

No time to read? Just looking for #1 recommendation?

Our #1 recommendation is Pilot Gtec Signpen 0.4 0.3 G-Tec Gtech - a popular frequently recommended option with over 5000 great customer reviews.

As usual, this month we aggregated dozens of popular Pilot Pens in the Philippines and ranked them based on durability, ink flow, comfort in hand, variety of colors and tip sizes available. According to this February's formal ranking, pilot pens by Pilot are the most prominent ones, followed by SM Stationery .

Ranked #1

Pilot

Pilot Gtec Signpen 0.4 0.3 G-Tec Gtech

To product info

View in product list

Summary

10 best Pilot Pens in pictures

(scroll me)

ReviewFinder may earn commission at no extra cost to you. Commission amount is not a factor in ranking products.

Top 10 this February

#1 Pilot Gtec Signpen 0.4 0.3 G-Tec Gtech

This rollerball pen stands out with its ultra-fine tip, making it perfect for precise writing and detailed illustrations, graphs, and drawings.

The Pilot G-Tec-C4 Signpen is a versatile rollerball pen designed for those seeking fine and precise writing. With its ultra-fine 0. 4mm nib, this pen allows for crisp and accurate strokes, making it ideal for various applications that require meticulous detail.

Whether you're jotting down notes, creating intricate illustrations or sketching precise graphs, the G-Tec-C4 delivers a smooth and controlled writing experience. Crafted with precision in mind, this pen ensures consistent ink flow without any skips or smudges.

Its high-quality ink formula dries quickly to prevent smearing and enables you to achieve neat and professional-looking work every time. The G-Tec-C4's slim barrel design provides a comfortable grip, allowing you to write effortlessly even during extended periods.

Equipped with advanced technology, this rollerball pen guarantees consistent line width throughout its lifespan. The durable stainless steel tip ensures longevity while maintaining its exceptional performance over time.

The Pilot G-Tec-C4 Signpen is an excellent choice for students, professionals or anyone who values precision in their writing instruments. Its versatility extends beyond everyday use as it can cater to artists who require utmost control over their artwork.

Go to product

Price breakdown of best-selling pilot pens in the Philippines

We made a price chart of the top selling Pilot Pens (see below). Budget options start at ₱13.95, going up ₱385. The most popular option is priced at ₱65, which is on the cheaper side. We definitely recommend checking it out. Click on a product in the chart for more info.

₱13.95

₱75

₱385

#2 Pilot BP-1RT Retractable Ballpoint Pen 0.7mm Pack of 3

This retractable ballpoint pen offers a smooth writing experience with its 0.7mm tip and rubber grip. It comes in a pack of 3, allowing for variety in color options. The brand is well-known and trusted in the pen industry.

The Pilot BP-1RT Retractable Ballpoint Pen is a reliable writing tool that offers a smooth and comfortable writing experience. With its 0. 7mm tip, this retractable pen allows for precise and clear lines, making it ideal for everyday use.

Featuring a rubber grip, the Pilot BP-1RT provides added comfort during extended writing sessions, ensuring that your hand remains relaxed and fatigue-free. The retractable design eliminates the hassle of losing caps or accidentally marking surfaces while not in use.

This pack includes three pens, giving you an ample supply to last for an extended period of time. You can choose between all Black or a combination pack of Black/Blue/Red ink colors to suit your personal preferences or organizational needs.

Measuring at 5. 5x0. 5x20cm, these pens are compact and easy to carry around in your bag or pocket. Whether you're jotting down notes at school or taking important memos at work, the Pilot BP-1RT is designed to meet all your writing needs with ease.

Pilot is a well-established brand in the pen industry known for manufacturing high-quality products that deliver exceptional performance and durability. With their trusted reputation, you can feel confident in choosing the Pilot BP-1RT as your go-to ballpoint pen.

Overall, if you're looking for a reliable and comfortable ballpoint pen that will provide smooth writing every time, look no further than the Pilot BP-1RT Retractable Ballpoint Pen Pack of 3!

Go to product

#3 Pilot G-tec Gtec Sign Pen C4 / C3 Gel Pen

This gel pen offers two available points for fine, precise writing. It is perfect for various applications and is an authentic product from Japan.

The Pilot G-Tec Sign Pen C4 and C3 Gel Pens are the perfect writing tools for those who value precision and fine craftsmanship. With two available points, 0. 4mm and 0. 3mm, these pens offer versatility in creating detailed lines and intricate designs.

Designed specifically for schools, offices, and any other application where precise writing is essential, the G-Tec Sign Pen allows users to effortlessly produce neat, accurate handwriting without sacrificing comfort.

The sleek design of these pens ensures a comfortable grip that allows for hours of fatigue-free writing. Made by the renowned brand Pilot from Japan, these pens boast authentic quality that you can trust.

Each pen is carefully crafted to deliver consistent ink flow throughout its use, ensuring smooth gliding on paper with every stroke. With their fine tips and smooth ink flow, the G-Tec Sign Pens are ideal for tasks such as note-taking during lectures or meetings, drafting diagrams or charts with intricate details, or simply adding a touch of elegance to your everyday handwriting.

Go to product

#4 PILOT BP145F Retractable Ballpen Refillable, Fine Point, Black

This retractable ballpoint pen features a stainless steel tip, durable construction, and a comfortable grip, making it perfect for frequent writing and on-the-go use.

The Pilot BP145F Retractable Ballpen Refillable is a reliable and long-lasting ballpoint pen that is perfect for all your writing needs. With its stainless steel tip and tungsten carbide ball, this pen ensures smooth and consistent ink flow, providing a comfortable writing experience every time.

The ribbed grip adds an extra level of comfort, allowing you to write for extended periods without any discomfort. The retractable tip prevents the ink from drying out when not in use, ensuring that your pen is always ready to write.

This pen features a 0. 7mm fine point nib, making it ideal for precise and detailed writing tasks. The blue ink flows smoothly onto the page, creating clean lines and legible handwriting. The ribbed barrel not only provides a comfortable grip but also adds a touch of style to the overall design of the pen.

With its sleek pocket clip, this ballpen is perfect for on-the-go writing. Whether you're taking notes in meetings or jotting down ideas while traveling, this pen can easily be clipped onto your pocket or notebook for convenient access.

Each pack contains one Pilot BP145F Retractable Ballpen Refillable, along with information on how to refill it using Pilot BP-S, BPS-GP Refills or Rex/Super Grip Refill options. In summary, the Pilot BP145F Retractable Ballpen Refillable combines reliability with comfort and style.

Its fine point nib allows for precise writing while its retractable feature ensures that the ink doesn't dry out between uses. Whether you're a student or professional who frequently writes throughout the day, this pen is an excellent choice that won't disappoint.

Go to product

#5 Pilot Retractable Ballpoint Pens, Fine Tip, Assorted Colors (Pack of 3

This product stands out with its smooth and fine writing, durable design, and retractable feature. It also has an elegant design and comes in a pack of 3 assorted colors.

The Pilot Retractable Ballpoint Pens, Fine Tip, Assorted Colors (Pack of 3) are a versatile and practical addition to any stationery collection. These ballpoint pens feature a fine tip size of 0. 7mm, allowing for precise and detailed writing.

The pens also boast super smooth performance, ensuring a seamless writing experience every time. With their smooth and fine writing capabilities, these Pilot retractable ballpoint pens are perfect for tasks that require accuracy and precision.

Whether you're jotting down notes in a meeting or creating intricate designs, these pens will deliver exceptional results. The elegant design of these ballpoint pens adds a touch of sophistication to your writing experience.

The rubber grip provides comfort during extended periods of use, preventing hand fatigue and allowing for effortless control over your penmanship. Not only do these Pilot retractable ballpoint pens offer superb functionality, but they are also built to last.

Their durable design ensures that they can withstand daily use without compromising on performance. With the ability to retract the pen tip when not in use, these Pilot ballpoint pens offer convenience and portability.

No need to worry about losing caps or making accidental marks while carrying them around. Overall, the Pilot Retractable Ballpoint Pens with Fine Tip are a reliable choice for those who value both style and functionality in their writing instruments.

With their smooth performance and durable design, they are sure to become an essential tool in any writer's arsenal.

Go to product

#6 Pilot Black Retractable Ballpen - Set of 12 Fine Pens

This set of 12 fine ballpoint pens in black offers a durable design, retractable feature, and authentic quality for a smooth and precise writing experience.

The Pilot Black Retractable Ballpen is a set of 12 fine pens that are perfect for all your writing needs. Each pen features a retractable design, allowing for easy and convenient use. The fine ballpoint tip provides smooth and precise writing, making it ideal for tasks that require precision and accuracy.

These ballpens are made with high-quality materials to ensure durability and longevity. The black color adds a touch of elegance to your writing experience, while the 0. 7mm thickness guarantees clear and legible lines.

With 12 pens in each box, you'll never have to worry about running out of ink again. This set of Pilot Ballpens is not only functional but also authentic, ensuring that you're getting a product of the highest quality.

The licensed design further confirms its authenticity and reliability.

Go to product

#7 Pilot Acroball Pen Set - Fine and Extra Fine

This pen set offers a smooth writing experience with its fine and extra fine tips. It also features a textured rubber grip for added comfort and comes in a variety of vibrant colors.

The Pilot Acroball Pen Set includes both fine and extra fine point pens, allowing for precise and detailed writing. With a choice of black, blue, red, green, and purple ink colors, these pens offer versatility for various writing tasks.

The 0. 5mm fine pen is perfect for creating thin lines and intricate drawings, while the 0. 7mm extra fine pen provides a slightly bolder line without sacrificing precision. These pens are crafted by Pilot, a trusted brand known for its quality writing instruments.

The black color option adds a touch of elegance to any writing experience. The textured rubber grip ensures comfort during extended periods of use, preventing hand fatigue. The smooth writing experience offered by these pens is unparalleled.

Their ink flows effortlessly onto the page without smudging or skipping, resulting in clean and professional-looking handwriting or artwork. Available in an array of vibrant colors such as pink, green, silver orange blue-green blue white among others , these Acroball Pens allow users to express their personality through their choice of writing instrument.

Go to product

How we rank

Meta-rankings combine expert endorsements.

ReviewFinder's formal aggregated ranking is a combination of our meta-rankings and consumer score.

Meta-rankings are a combination of all expert reviews we can find on the Internet. When present, meta-rankings are the strongest ranking signal (we trust experts more than consumers).

ReviewFinder - how we rank via Consumer Score

Consumer score is calculated from customer reviews.

Not all categories have enough expert endorsements online - in such cases we use consumer score weighted by historical brand prominence in the niche (brands that historically specialize in a certain category get a slight bump in that category rankings). Consumer score is a normalized 0-10 score based on customer reviews.

Recently we removed price form our rankings - it no longer affects recommendations. Whether to go budget or premium is consumer's choice, not ours.

#8 Pilot V5/V7 Hi-Techpoint Retractable Rollerball Pen

Experience effortless writing with a precision needle-point tip that ensures smooth, skip-free lines. Its sleek retractable design and refillable feature make it a practical choice for everyday use.

The Pilot V5/V7 Hi-Techpoint Retractable Rollerball Pen is designed for those who appreciate precision and a smooth writing experience. Available in two tip sizes, 0. 5mm and 0. 7mm, this pen caters to various writing preferences while ensuring clarity in every stroke.

The model BX-RT-V5 features a modern design complemented by a precision needle-point tip, delivering consistent ink flow without skips or interruptions. One of the standout attributes of this pen is its sleek retractable mechanism, making it both convenient and practical for everyday use.

Whether you're jotting down notes or crafting detailed documents, the Pilot V5/V7 RT offers an effortless glide across paper that enhances your overall writing experience. Additionally, refills are available for the Pilot Hi-Tecpoint V5 RT Retractable Rollerball Pen (model BXS-V5RT), ensuring that you can continue using your favorite pen without interruption.

Go to product

#9 Pilot FriXion Ball Clicker Erasable Gel Pen, 0.5 mm

Experience error-free writing with this innovative pen that combines vibrant, smooth ink with a unique erasing feature, allowing you to effortlessly edit and rewrite without damaging your documents.

The Pilot FriXion Ball Clicker Erasable Gel Pen features a 0. 5 mm fine tip that delivers precise and smooth writing, making it ideal for various tasks such as editing, list-making, and scheduling. This innovative pen is America's first retractable erasable gel ink pen, allowing users to write and erase repeatedly without causing damage to documents.

The unique thermo-sensitive gel ink formula disappears with the friction of erasing, ensuring clean corrections without wear or tear on your paper. Additionally, the FriXion Clicker combines the practicality of a retractable design with the benefits of erasable ink.

The eraser is conveniently located at the top of the pen for easy access while working on projects. To retract the tip, simply press down on the clip.

Go to product

#10 Pilot Hi-Tec-C Coleto 3 Color Barrel Pen

This customizable pen features superior bio-polymer gel ink and a super fine point, perfect for detailed writing and fine art. Ideal for those seeking precision in their creative endeavors.

The Pilot Hi-Tec-C Coleto 3 Color Barrel Pen is designed for those who appreciate customization and precision in their writing instruments. This pen body can accommodate either three or five refills, allowing users the flexibility to choose their preferred colors and ink types from the extensive range of Pilot Hi-Tec C Coleto refills.

The easy-to-use design features a top cap that lifts open, making it simple to insert the desired refill into the barrel. This pen stands out for its exceptional performance, making it an excellent choice for fine art drawing, writing Chinese characters, or catering to individuals with small handwriting who require clean and precise lines.

The superior quality of this pen is attributed to two key technologies: the bio-polymer gel ink provides a smooth flow and vibrant color delivery while minimizing smudging; meanwhile, the super fine Hi-Tecpoint ensures accuracy in every stroke.

Go to product