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7mesh is different because we design to your dimension and articulate our gear for an on the bike fit. Check out our size guide  to get the perfect fit.

Fit & Sizing

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Men's

Men's Gravel

Men's Mountain

Bibs & Tights

B2X Industry

B2X 7mesh Staff

B2X Employee Purchase

B2X Industry Special

Men's Best Sellers

Men's Bibs & Tights

Accessories

B2X Ambassador

Mid Summer Sale

B2C Retail

Men's Warm Weather Riding

End of Summer Sale

Full Price Collection

BF20

A slim, padded bike boxer brief, designed to cushion under casual clothes or baggies for quick comfort wherever the day takes you.

A slim, padded bike boxer brief, designed to cushion under casual clothes or baggies for quick comfort wherever the day takes you.

Men's Foundation Bike Boxer Brief

XS / Blue Jean

S / Blue Jean

M / Blue Jean

L / Blue Jean

XL / Blue Jean

XXL / Blue Jean

XS / Black

S / Black

M / Black

L / Black

XL / Black

XXL / Black

XS / Bottle Blue

S / Bottle Blue

M / Bottle Blue

L / Bottle Blue

XL / Bottle Blue

XXL / Bottle Blue

XS / Douglas Fir

S / Douglas Fir

M / Douglas Fir

L / Douglas Fir

XL / Douglas Fir

XXL / Douglas Fir

XS / Redwood

S / Redwood

M / Redwood

L / Redwood

XL / Redwood

XXL / Redwood

Get out there this Spring with fresh styles and new colours!

Shop now and save 20% EXTRA on sale products for a limited time!

PAST SEASON COLOURS

Strechy and compressive fabric

Elastic waistband

Features

The model is 5'10 with a 41" hip and is wearing a size medium.

Find the right size

Media Review

Men's Pants & Shorts

Pants & Shorts

Our award-winning, do-it-all overshort recently got a full make over. More stretch, more mobility and a host of refinements take this top-selling trail baggy to a whole new level.

Our award-winning, do-it-all overshort recently got a full make over. More stretch, more mobility and a host of refinements take this top-selling trail baggy to a whole new level.

Men's Glidepath Short

Women's

Unisex

Women's New This Spring

Men's New this Spring

Women's Warm Weather Riding

The 7mesh x Ciele GoCap is lightweight, fast drying, and performance-ready. It features COOLmatic fabric, and 100% recycled performance fibre.

7mesh GOCap

Men's Sale

Men's Cool Weather Riding

A bike pant built to resist even the toughest days on the trail, constructed with added durability and abrasion resistance, ready to take the hits and keep on rolling, even in the summer heat.

A bike pant built to resist even the toughest days on the trail, constructed with added durability and abrasion resistance, ready to take the hits and keep on rolling, even in the summer heat.

Men's Flightpath Pant

Women's Gravel

Women's Mountain

Men's Road

Women's Road

Women's Cool Weather Riding

No excuse socks that are always ready to go. Luxurious 85% Merino meets fine, made in Italy tailoring, and a reassuringly tall 7" cuff height.

No excuse socks that are always ready to go. Luxurious 85% Merino meets fine, made in Italy tailoring, and a reassuringly tall 7" cuff height.

Ashlu Merino Sock

A front cut-away keeps things cool by relieving heat build-up around sensitive areas. This is the new go-to hidden layer suited to getting to work, bikepacking trips, and any ride that ends at a brewery. Stay loose. Stay cool. This is the foundation we build on. 

Description

Body: 62% nylon 18% polyester 20% elastane

Inseams

Care Instructions

Designed as a complement to your regular riding shorts, this sleek, minimalist underwear features an innovative lightweight low-profile chamois to keep your skin safe from the saddle’s wrath.

Men's Foundation BIke Boxer Brief - Men's Bike Underwear | 7mesh

Products that blend performance fabrics with highly articulated patterns to create a close-fit that feels like an extension of your body. Skin Fit apparel improves aerodynamics, moisture management and thermal efficiency.

Skin Fit

These are unique in a good way. There is no padding directly in front of the genitals, which makes way more sense! There is a thin pad on the sides, between the legs.
Minimal thickness but for anyone riding regularly, these will be good for a average distance.
Size: unless everyone but me loves super tight shorts, these are small. I am 6'3" and 165 lbs. That's pretty thin. I normally wear medium, but these were a large for sure. Even considering a XL pair for something that is almost loose.

Great underwear with just enough padding

This is my first time trying a light weight chamois and I was very much surprised at how comfortable these are. Since they are more of a minimalist cycling brief, and simply assumed they would be less comfortable. But that hasn't been the case. First ride out I went for a 13 mile ride and I was surprisingly comfortable. I used them regular now for rides of this length and like them more because of their lightweight and low bulk. I will being buying another pair.

Pleasantly Surprised

This is my second time buying the foundation boxer and they're awesome! They're not bulky but still provide a little something so your butt doesn't get sore. Best of all, they're comfortable enough to wear an entire day! This is now the only chamois I own.

Great light chamois

I'm 6'-4" (193cm) and 220lbs (100kg) with a 36" inseam. I have an incredibly hard time finding cycling clothes that fit me. These shorts fit very well and true to the sizing on the site. I thought the padding should be a bit more dense but they are light-weight as I was looking for so they do what was expected. The only complaint; the garment tag is sewn right on the hip just below the waistband and it scratches and itches in this location. It is not possible to remove it as it is sewn to the seams; doing so would compromise the stitching.

Just Right

I can do 6 hour rides without discomfort. Incredibly breathable and not at all bulky. I've had absolutely no issues.

Just what I wanted

Excellent product. Use them under trousers when commuting to work. Highly recommended

Excellent for commuting

Une véritable seconde peau.
Pour les sorties de moins de 50km je ne mets plus que ça !

Une seconde peau !

Bought this on a recommendation from the bike shop, and was not disappointed. It's light, skin tight without being uncomfortable, and makes my stock MTB seat no longer a pain. I haven't used it muchyet, but that will change soon.

Just right

Everything the description says is true! Light, soft fabric, super riding experience . Couldn't believe it was so good.
I'm 190cm, with 108 cm hip the XL was perfect. I'll buy another one for sure!

Extremely light!

I usually wear a size 30" pants. I am an XS in all other 7mesh products. Other reviews said to go up one size and the size chart indicated that I should get a S. The S fit me perfectly. Wearing these on my gravel bike under my Farside shorts is far more comfortable than wearing my road bike bib shorts.

Read the Size Chart

Designed to sit slightly off the body, Trim Fit products provide some room for light layering and feature mechanical (fabric) stretch or elastane, combined with articulated patterns.

Trim Fit

Perfect for layering or a more laidback vibe, Relaxed Fit products combine articulated patterns with an eased shape that works on or off the bike.

Relaxed Fit

For jerseys and tops, the chest is the most crucial measurement followed by the natural waist.

Women's tops sizing guide

For jerseys and tops, the chest is the most crucial measurement followed by the natural waist.

Men's tops sizing guide

Unisex socks sizing guide

For overshorts, pants and tights, the hip is the most crucial measurement to achieve the right fit. Consult the thigh measurement if the garment is skin or trim fit.

Men's bottoms size guide

For overshorts, pants and tights, the hip is the most crucial measurement to achieve the right fit. Consult the thigh measurement if the garment is skin or trim fit.

Women's bottoms size guide

Warmers should fit tightly, almost like a second skin. The thigh should fit snug to keep the warmers in place. See individual product page for inseam length measurements.

Unisex leg warmer sizing guide

Warmers should fit tightly, almost like a second skin. The thigh should fit snug to keep the warmers in place. See individual product page for inseam length measurements.

The right fit is crucial to a comfortable ride. The chamois should be tight in the hip and thigh and feel like a second skin.

Women's chamois size guide

The right fit is crucial to a comfortable ride. The chamois should be tight in the hip and thigh and feel like a second skin.

Men's chamois size guide

Warmers should fit tightly, almost like a second skin. The bicep should fit snug to keep the warmers in place. See individual product page for sleeve length measurements.

Unisex arm warmer sizing guide

Warmers should fit tightly, almost like a second skin. The bicep should fit snug to keep the warmers in place. See individual product page for sleeve length measurements.

For longer garments such as jackets, chest and natural waist measurements are most crucial, however you can also take your hip measurement into consideration.

We also accommodate a cycling reach sleeve length on all garments. See individual product page for sleeve length measurements.

Men's Jackets Size Chart

For longer garments such as jackets, chest and natural waist measurements are most crucial, however you can also take your hip measurement into consideration.We also accommodate a cycling reach sleeve length on all garments. See individual product page for sleeve length measurements.

Women's jackets sizing guide

Men's accessories sizing guide

Women's accessories sizing guide

The right fit is crucial to a comfortable ride. The boxer brief should be tight in the hip and feel like a second skin.

Men's boxer brief size guide

The right fit is crucial to a comfortable ride. The boxer brief should be tight in the hip and feel like a second skin.

The right fit is crucial to a comfortable ride. The brief should feel snug and like a second skin.

Women's brief size guide

The right fit is crucial to a comfortable ride. The brief should feel snug and like a second skin.

Men's Foundation Bike Boxer Brief

Complete the kit

Men's Glidepath Short

7mesh GOCap

Men's Flightpath Pant

Ashlu Merino Sock

PAST SEASON COLOURS

Men's Foundation Bike Boxer Brief

Features

Strechy and compressive fabric

Elastic waistband

Find the right size

Media Review

Review Overview

Customer reviews

You might also like

Men's Farside Long Short

Men's Foundation Short

Men's Roam Shirt SS

Men's Chilco Vest

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Shipping & Returns

Crash Program

Fit & Sizing