4.5" Trunks

462 Reviews

$32

Color MicroModal Charcoal

Size

Color

It's all in the hips

For the best fit, pick your size based on your hip measurement.
Body measurement in inches

Size	Waist	Hips
XS	26-27.5"	33-34"
S	28-29.5"	35-37"
M	30-31.5"	38-40"
L	32.5-34"	41-43"
XL	35-37.5"	44.5-46.5"
2X	38.5-42"	48-50"
3X	43-45"	51.5-53.5"
4X	46-48"	55-56"

For more detailed information, please see our Fit Guide page.

How to measure your hips

Stand on a level surface, feet together without shoes.
Measure around the fullest part of your hips and bottom - this is usually 7-9" below your natural waistline.
Keep the tape measure parallel to the floor, and don't pull too tight.

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We took a classic and made it an icon with the first truly gender-neutral boxer brief. A staple silhouette in luxurious supersoft, breathable, and featherlight MicroModal. Our smooth-fitting design that never binds or rides up. Made to stretch and move with any body.

Fit-tested on all body types, sizes XS-4X
Signature stay-put silky soft X= Patch waistband
Sustainably sourced from renewable beechwood trees
Mid rise, 4.5" inseam
95% MicroModal, 5% spandex
Highly stretchy to accommodate different body types
Smooth, durable flatlock seams won’t irritate or chafe
Machine wash cold, tumble dry low

ECO-FRIENDLY

Our luxury MicroModal fabric is made out of sustainably harvested and processed Beechwood fibers.

Stock Up & Save! Buy 3+ of any undies and/or bras & get 10% off. Buy 5+ and get 15% off.

Living Wage factories

Ethically produced in women-owned factories that pay living wages.

fit-tested for every body

Obsessively fit-tested on real people, sizes XS-4X.

Love at first wear

If you don't love them, your first pair is on us.

eco-friendly process

Sustainably harvested materials and earth-conscious production.

Live the X

Join the movement. Follow @TomboyX and tag us in your pics for a chance to be featured.

Fabrics & Technology

Cotton

Our classic soft jersey knit holds its shape after many wear and care cycles.

Shop Cotton

MicroModal

The luxurious companion to cotton. Supersoft, breathable and stretches to meet you.

Shop Micromodal

Traveler

Quick-drying, durable and ultralight performance fabric. Anti-bacterial and anti-microbial.

Shop Traveler

First Line Leakproof

Your first line of defense — our classic cotton armed with leak protection for light period days and incontinence.

Shop First Line