Side profile of woman wearing BRANWYN Essential Boyshort seamless Merino Underwear in black.
Back view of woman in black bralette and matching black Merino wool boyshort underwear. Made of quick-drying natural fibers that are gynecologist recommended.
Detail of woman stretching the Essential Boyshort in black, made of stretchy, seamless, knit Merino wool.
Woman practicing yoga stretches in Merino wool boyshort underwear by BRANWYN. With stretchy Merino support, this high waisted brief is ideal underwear for activity.
Front view of light nude seamless boyshort brief underwear by BRANWYN. This high waisted Merino wool underwear is designed to stay put and move with you through activity.
Side view of woman in light nude Essential Boyshort by BRANWYN. Made of BPA, PFA, toxin free, naturally sustianable Merino wool.
Side view of BRANWYN light nude Merino wool boyshort underwear. Sustainable seamless boyshort that is stretchy, quick drying, and naturally breathable.
Two woman posing together in Merino underwear sets, wearing Merino boyshort underwear in shades of nude.
Woman wearing BRANWYN Essential Boyshort seamless Merino underwear in warm nude with matching bra. This quick drying underwear keeps you dry and fresh.
Back view of BRANWYN Essential Boyshort in warm nude. Seamless Merino wool underwear that is breathable, moisture wicking, and odor free.
Woman smiling and posing in warm nude Merino underwear set by BRANWYN. Wearing the high waisted Merino Wool Essential Boyshort underwear by BRANWYN.
Side view of women’s BRANWYN boyshort underwear in luna gray. Seamless Merino boyshort with sweat-wicking, odor-resistant performance benefits.
Front view of boyshort cut women’s Merino wool underwear in Luna gray. These natural undies are super soft, comfortable, and seamless for a chafe-free fit.
Back view of the women's Essential Boyshort underwear in Luna gray by BRANWYN. These Merino Wool boyshort panties are made of natural fibers that are naturally toxin free.
Back view of the Merino wool seamless boyshort in dark nude. This women's boyshort underwear is designed for comfort and made to move with you.
Essential Boyshort - BRANWYN | Performance Innerwear
Woman stretching in dark nude Merino wool underwear set by BRANWYN. Wearing the women's Essential Boyshort underwear made of seamless Merino wool natural fibers.
BRANWYN's Essential Boyshort underwear in dark nude made of seamless knit Merino wool. Perfect for outdoor adventures like yoga, hiking, running, and swimming.
Front view of a model wearing BRANWYN Sustainable Seamless Merino Wool Essential Boyshort in Transformative Teal.
Side view of a model wearing BRANWYN Sustainable Seamless Merino Wool Essential Boyshort in Transformative Teal.
Women doing yoga in BRANWYN Sustainable Seamless Merino Wool Essential Bralette and Essential Boyshort in Transformative Teal.

Essential Boyshort

$35.70 USD $42.00 USD
15% Off
69 reviews
69 reviews
A picture of a sheep, seamless, and earth to represent the top qualities of BRANWYN underwear and bras: ZQ Merino and seamless
Quantity:
Color:Black
Size:XS
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 Essential Boyshort brings boxier coverage than the Hipster, making it your go-to for lounging, lunging, layering, or taking a spontaneous swim. Under a dress or your ski bibs, it shape-shifts as effortlessly as you do.

Our seamless Merino wool and elastic-free waistband mean no digging, no rolling, no adjusting—ever.  Finished hem leg openings move with you from early-morning miles to end-of-day exhale. So buttery-soft, you’ll forget you’re wearing it... until you realize you never want to take it off.

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

Bonus: Our proprietary GLDNspun™ technology is crafted with ZQ+™, RWS, and Woolmark-certified Merino, and OEKO-TEX® 100-certified fibers–that means it is sustainable—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 wearing a brown sports bra and leggings against a plain background Woman wearing a brown seamless Merino wool sports bra against a neutral background.
Essential Busty Bra
$52.70 USD $62.00 USD
BRANWYN's seamless Merino wool Bralette bra in Black. Natural fiber, plastic free activewear. Person wearing black athletic pants and sports bra, standing on one leg with arms raised.
Essential Bralette
$44.20 USD $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

Odor Resistant

BUTTERY SOFT NATURAL FIBER

GYNECOLOGIST APPROVED

MONEY BACK GUARANTEE FOR 14 DAYS

Not sure about wool?

Merino wool is super soft like cashmere!

We know you'll love it! But just in case you don't, we offer a First Try Guarantee.*