Side view of the black BRANWYN Essential Boyshort, seamless underwear made from Merino wool for women.
Back view of the black Essential Boyshort and bralette, quick-drying, OB-GYN recommended Merino wool underwear.
Woman stretching the black Essential Boyshort waistband, stretchy seamless knit Merino wool underwear.
Back view of two women in black BRANWYN sets, Merino wool boyshort underwear made for activity.
Front view of the Light Nude Essential Boyshort, seamless underwear that stays put and moves with you.
Side view of the Light Nude Essential Boyshort, BPA- and PFAS-free seamless underwear made from Merino wool.
Side view of the Light Nude Essential Boyshort, stretchy, quick-drying, naturally breathable Merino wool underwear.
Two women smiling in nude BRANWYN bra and Essential Boyshort sets, seamless Merino wool underwear.
Front view of the Warm Nude Essential Boyshort with matching bra, quick-drying underwear that keeps you fresh.
Back view of the Warm Nude Essential Boyshort, breathable, moisture-wicking, odor-resistant Merino wool underwear.
Woman smiling in a Warm Nude bra and Essential Boyshort, seamless underwear made from natural fiber Merino wool.
Side view of the Luna Gray Essential Boyshort, sweat-wicking, odor-resistant seamless Merino wool underwear.
Front view of the Luna Gray Essential Boyshort, super-soft, chafe-free seamless underwear made from Merino wool.
Back view of the Luna Gray Essential Boyshort, natural fiber Merino wool boyshort underwear for women.
Back view of the Dark Nude Essential Boyshort, seamless Merino wool underwear made to move with you.
Back view of a woman in the Dark Nude Essential Boyshort and matching Merino wool bra.
Woman in a Dark Nude BRANWYN set with the Essential Boyshort, seamless underwear made from Merino wool.
Front view of the Dark Nude Essential Boyshort, Merino wool underwear for yoga, hiking, running, and swimming.
Front view of the Transformative Teal Essential Boyshort, seamless natural fiber underwear made from Merino wool.
Side view of the Transformative Teal Essential Boyshort, breathable seamless Merino wool underwear.
Woman doing yoga in a Transformative Teal Bralette and matching underwear, BRANWYN natural fiber activewear.
Woman in the Future Dusk Essential Boyshort, seamless underwear made from Merino wool.
Front view of the Future Dusk purple Essential Boyshort and bra set, seamless Merino wool underwear.
Back view of the Future Dusk Essential Boyshort, full-coverage seamless underwear made from Merino wool.
Woman in a yoga balance pose in the Future Dusk Essential Boyshort, Merino wool underwear for active women.

Essential Boyshort

$42.00 USD
155 reviews
155 reviews
A picture of a sheep, seamless, and earth to represent the top qualities of BRANWYN underwear and bras: ZQ Merino and seamless
BRANWYN Merino wool Essential Boyshort underwear size guide slider.
Color:Black
Size:XS
Quantity:
In stock

Underwear Size Guide

All our knitwear has a lot of stretch, so you might be able to wear two different sizes. If you are unsure, size up.

WAIST HIPS PANT
XS 23 - 24 32 - 34 0 - 2
S 24 - 26 34 - 36 2 - 4
M 26 - 28 36 - 38 6 - 8
L 28 - 30 38 - 40 10 - 12
XL 30 - 32 40 - 42 12 - 16
XXL 32 - 34 42 - 44 16 - 18

Tell me more about the fit

Our Performance Innerwear is meant to fit snugly on the body. If you prefer a looser fit, we recommend sizing up. If it feels just a little tight and you aren't sure if the next size up would be better, then we recommend wearing and washing a few times to see if it breaks in to your liking before exchanging it for another size.

Will it stretch out?

Not really. Our Performance Innerwear does give a bit with wear, but instead of becoming loose, it will mold to your body more over time.

Underwear Size Guide

All our knitwear has a lot of stretch, so you might be able to wear two different sizes. If you are unsure, size up.

WAIST HIPS PANT
XS 23 - 24 32 - 34 0 - 2
S 24 - 26 34 - 36 2 - 4
M 26 - 28 36 - 38 6 - 8
L 28 - 30 38 - 40 10 - 12
XL 30 - 32 40 - 42 12 - 16
XXL 32 - 34 42 - 44 16 - 18

Tell me more about the fit

Our Performance Innerwear is meant to fit snugly on the body. If you prefer a looser fit, we recommend sizing up. If it feels just a little tight and you aren't sure if the next size up would be better, then we recommend wearing and washing a few times to see if it breaks in to your liking before exchanging it for another size.

Will it stretch out?

Not really. Our Performance Innerwear does give a bit with wear, but instead of becoming loose, it will mold to your body more over time.

50% brief, 50% short, 100% incredible: our seamless Merino wool Essential Boyshort underwear gives you boxier coverage than the Hipster, making it your go-to for lounging, lunging, layering, or a spontaneous swim. Under a dress or your ski bibs, it shape-shifts as effortlessly as you do.

Knit from super-fine 81% 17.5-micron ZQ+™ Merino wool, it has an elastic-free waistband that means no digging, no rolling, and no adjusting, ever. Finished leg openings move with you from early-morning miles to end-of-day exhale. It’s so buttery-soft, you’ll forget you’re wearing it… until you realize you never want to take it off.

A note on coverage: the beauty of our bodies is that no two booties are the same (that’s the magic). Coverage will naturally vary with your shape and how high you wear them on your hips.

Bonus: Our proprietary GLDNspun™ technology is crafted with ZQ+™, RWS, and Woolmark-certified Merino wool fibers–free from BPA, PFAs, and other toxic “forever chemicals.”

Double Bonus: Our Boyshorts can be worn two ways: snug around the hips or pulled up just below the belly button for a higher-waisted fit and more tummy coverage.

COMPLETE THE SET

Woman in a Dark Nude BRANWYN Essential Busty Bra, a seamless Merino wool sports bra for larger busts. Side view of the Dark Nude BRANWYN Busty Bra, a natural fiber Merino wool pullover bra for a larger bust.
Essential Busty Bra
$62.00 USD
Woman in a black BRANWYN seamless Merino wool bralette, a soft natural fiber bra for everyday wear and activewear. Close-up of a black seamless Merino wool bralette as a woman raises her arms, natural fiber bra by BRANWYN.
Essential Bralette
$52.00 USD

PERFORMANCE WITHOUT COMPROMISE

Designed for superior performance and maximum comfort—it all starts with Merino wool. Super-soft, ultra-fine Merino wicks sweat to keep you dry, fresh, and funk-free. The natural crimp of its fiber traps air so you stay cool when things heat up and keep warm when there’s a chill.

Moisture wicking

Naturally breathable

Temperature regulating

Benefits of Merino wool icon: Odor-resistant quality of seamless Merino wool

Odor Resistant

BUTTERY SOFT NATURAL FIBER

GYNECOLOGIST APPROVED