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.
Back detail of the black BRANWYN Merino wool bralette with adjustable straps crossed for a racerback style.
Woman with curly hair in a black seamless Merino wool bralette and underwear, a soft, breathable natural fiber bra.
Front view of a black BRANWYN seamless Merino wool bralette and bikini underwear.
Woman seated in a black seamless Merino wool bralette, a naturally temperature-regulating bra by BRANWYN.
Back view of a black BRANWYN Merino wool bralette and thong, seamless natural fiber bra with adjustable straps.
Back view of a black seamless Merino wool bralette with adjustable straps, breathable for everyday comfort.
Woman smiling in a black BRANWYN Merino wool bralette and seamless underwear set, natural fiber activewear.
Back view of a curvy woman in a black seamless Merino wool bralette, soft natural fiber bra by BRANWYN.
Curvy woman in a black BRANWYN seamless Merino wool bralette, arms raised, natural fiber bra for everyday comfort.
Close-up of a Light Nude BRANWYN seamless Merino wool bralette, a soft natural fiber bra for everyday wear.
Woman in a Light Nude seamless Merino wool bralette, naturally moisture-wicking for hiking and working out.
Back view of a Light Nude BRANWYN Merino wool bralette with adjustable straps for a comfortable fit.
Woman in a yoga stretch in a Light Nude Merino wool bralette, a lightweight performance bralette made for movement.
Close-up of a curvy woman in a Light Nude BRANWYN seamless Merino wool bralette, soft natural fiber bra.
Woman kneeling in a black BRANWYN Merino wool bralette and underwear set, naturally soft and breathable.
Front view of a Luna Gray seamless Merino wool bralette, a breathable performance bra for everyday movement.
Woman in a yoga pose wearing a Luna Gray seamless Merino wool bralette and underwear, BRANWYN activewear.
Back view of a Luna Gray BRANWYN Merino wool bralette, a breathable wool bra with adjustable straps.
Woman stretching in a Luna Gray seamless Merino wool bralette and underwear, made for everyday comfort.
Woman with silver hair in a Luna Gray seamless Merino wool bralette, naturally odor-resistant natural fiber bra.
Back view of a Luna Gray Merino wool bralette with straps crossed in a racerback style, by BRANWYN.
Woman in a Dark Nude BRANWYN seamless Merino wool bralette and underwear, natural fiber for everyday comfort.
Side view of a woman stretching in a Dark Nude seamless Merino wool bralette and underwear set by BRANWYN.
Woman smiling in a Dark Nude BRANWYN seamless Merino wool bralette, a breathable natural fiber bra.
Side view of a Dark Nude seamless Merino wool bralette, designed to naturally regulate body temperature.
Back view of a Dark Nude BRANWYN Merino wool bralette with adjustable straps.
Close-up of the Dark Nude seamless Merino wool knit on BRANWYN's Essential Bralette.
Woman with silver hair smiling in a Dark Nude Merino wool bralette and seamless underwear set by BRANWYN.
Back view of a Dark Nude BRANWYN Merino wool bralette with straps crossed in a racerback style.
Curvy woman in a Dark Nude seamless Merino wool bralette and underwear, natural fiber activewear by BRANWYN.
Woman in a Warm Nude BRANWYN seamless Merino wool bralette and underwear, a lightweight natural fiber bra.
Close-up of the adjustable strap buckle on a Warm Nude BRANWYN Merino wool bralette for a customized fit.
Woman stretching in a Light Nude seamless Merino wool bralette and underwear set, BRANWYN activewear.
Side detail of a Warm Nude seamless Merino wool bralette showing BRANWYN's floral-patterned natural fiber knit.
Woman with silver hair laughing in a Warm Nude BRANWYN Merino wool bralette and seamless underwear set.
Back view of a woman in a Warm Nude Merino wool bralette and seamless underwear by BRANWYN.
Woman with hands in her hair in a Warm Nude seamless Merino wool bralette, a breathable natural fiber bra.
Side view of a woman stretching in a Warm Nude BRANWYN Merino wool bralette and seamless underwear.
BRANWYN seamless Merino wool bralette in undyed Natural White, a natural fiber bra.
Back view of the undyed Natural White BRANWYN Merino wool bralette with adjustable straps.
Front view of a Natural White seamless Merino wool bralette, breathable and naturally moisture-wicking.
Side close-up of a Natural White BRANWYN Merino wool bralette showing the breathable seamless knit.
Front view of a Transformative Teal BRANWYN seamless Merino wool bralette, a natural fiber bra.
Close-up of a Transformative Teal seamless Merino wool bralette by BRANWYN.
Side view of a Transformative Teal BRANWYN Merino wool bralette, breathable natural fiber activewear.
Woman in a yoga pose wearing a Transformative Teal Merino wool bralette and matching underwear, BRANWYN activewear.
Close-up of a Future Dusk purple BRANWYN seamless Merino wool bralette.
Back view of a Future Dusk BRANWYN Merino wool bralette with adjustable straps.
Woman in sunlight wearing a Future Dusk seamless Merino wool bralette, breathable natural fiber activewear.
Woman with braids in a Future Dusk BRANWYN seamless Merino wool bralette, a natural fiber bra made for performance.

Essential Bralette

$52.00 USD
3780 reviews
3780 reviews
Merino wool benefits listed with icons: [Sheep icon] Merino wool = Sweat free freshness [Knit icon] Seamless knit = Second skin comfort [Sustainability icon] ZQ Merino = Ethical and sustainable fiber
BRANWYN Merino wool Essential Bralette size guide slider.
Color:Black
Size:XS
Quantity:
In stock

Bralette Size Guide

Size guide banner

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

A B C D
28 XS/S XS/S S S
29/30 S S S S/M
32 S/M S/M M M
34 M M M/L M/L
36 M/L M/L L L
38 L L L/XL L/XL
40 XL XL XL XXL
42 XXL XXL XXL XXL

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, we recommend wearing and washing it 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. 

How to measure your band size:

  • Measure snugly around your rib cage, directly under your bust.

  • Add 3 inches to that measurement.

    • Example: A 31" rib cage + 3 = 34, so your band size is 34.

  • If the result is an odd number, round UP to the next even band size.

    • Example: A 32" rib cage + 3 = 35 → round up to 36.

Bralette Size Guide

Size guide banner

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

A B C D
28 XS/S XS/S S S
29/30 S S S S/M
32 S/M S/M M M
34 M M M/L M/L
36 M/L M/L L L
38 L L L/XL L/XL
40 XL XL XL XXL
42 XXL XXL XXL XXL

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, we recommend wearing and washing it 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. 

How to measure your band size:

  • Measure snugly around your rib cage, directly under your bust.

  • Add 3 inches to that measurement.

    • Example: A 31" rib cage + 3 = 34, so your band size is 34.

  • If the result is an odd number, round UP to the next even band size.

    • Example: A 32" rib cage + 3 = 35 → round up to 36.

Our award-winning Essential Bralette is where it all started: the original high-content Merino wool seamless bra made with our proprietary GLDNspun™ construction in 81% ZQ+™ Merino wool, so it feels like a second skin and stays fresh and odor-free all day.

It's our lightest coverage bra, with no underwire and nothing to dig or roll. Made for light activity and everyday wear, it has convertible straps that work straight or crossed in the back. Want more coverage? Our Essential Busty Bra has you. Between sizes? Go up one.

Bonus:  Our ZQ+™, Woolmark™, and RWS-certified GLDNspun™ seamless Merino wool is also regenerative and sustainable.

Double Bonus: We hear it all the time: our Bralette really feels like going braless.

For more, scroll down to check out our customers’ reviews!

COMPLETE THE SET

Side view of the Warm Nude Essential Bikini, seamless underwear made from soft, breathable, odor-resistant Merino wool. Front view of Warm Nude bikini underwear by BRANWYN, natural fiber seamless underwear made from Merino wool.
Essential Bikini
$38.00 USD
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.
Essential Boyshort
$42.00 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