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 - BRANWYN | Performance Innerwear
BRANWYN Busty Bra strap detail, adjustable buckle for added comfort and supportive fit.
Side view of BRANWYN's Busty Bra in Black, seamless underwire free Merino bralette.
Front view of BRANWYN’s Essential Busty Bra, eco-friendly merino bralette for busty women.
Adjustable strap detail on BRANWYN Busty Bra in black, Merino comfort with wire-free support.
Back view of Black Essential Busty Bra by BRANWYN with adjustable criss-cross straps for added bust support.
Side angle of sustainable Merino Busty Bra in black, supportive wireless bra for large busts.
Woman stretching in eco-friendly seamless Busty Bra in black and matching Merino underwear.
Merino Busty Bra strap detail in black, wireless seamless support for larger busts.
Woman stretching in odor-resistant Merino Busty Bra by BRANWYN for busty women.
Woman wearing everyday Merino Busty Bra by BRANWYN, soft and breathable for all-day comfort.
Back view of BRANWYN sustainable Busty Bra showing adjustable straps for support and comfort.
Front view of black Busty Bra, natural merino wool for eco-friendly support.
BRANWYN sustainable Merino Busty Bra, natural and supportive bralette for bigger busts.
Athletic woman wearing seamless BRANWYN Busty Bra, odor-resistant bralette for busty women
BRANWYN Essential Busty Bra in Light Nude, naturally odor-resistant Merino bralette for large chested women.
Back detail of Light Nude Busty Bra, supportive Merino bralette with adjustable criss-cross straps.
Front view of BRANWYN Busty Bra in Light Nude, eco-friendly merino bra free from BPA and PFAS.
Back view of BRANWYN Essential Busty Bra in Light Nude, seamless merino bralette with adjustable straps.
Woman in BRANWYN sustainable Merino bra and underwear set, Light Nude colorway.
BRANWYN Busty Bra in Light Nude, side angle of seamless Merino bra designed for comfort.
Back view of BRANWYN Essential Busty Bra in Light Nude, seamless Merino bralette with adjustable straps.
Woman wearing BRANWYN Essential Busty Bra in Light Nude from the Essential Collection, soft merino wool bralette.
Back view of Light Nude Essential Busty Bra by BRANWYN, merino bralette with supportive straps for large chested women.
Side view of BRANWYN Busty Bra in Light Nude, seamless wireless merino bra for performance and comfort.
Back view of woman in BRANWYN Merino Wool underwear set featuring the Essential Busty Bra in Light Nude.
Woman stretching in BRANWYN Essential Busty Bra in Luna Grey, merino bralette designed for performance.
Back view of BRANWYN Essential Busty Bra in Luna Grey, seamless merino bralette with adjustable straps.
BRANWYN Busty Bra and Essential Bikini Set in Luna Grey, Merino lingerie designed for comfort.
Side profile of model sitting in BRANWYN Warm Nude Busty Bra, Merino bralette for busty women.
Woman walking in BRANWYN Warm Nude Merino Busty Bra and underwear set, seamless natural fiber design.
Back view of BRANWYN Busty Bra, seamless merino bralette with supportive cross straps
BRANWYN Merino yoga bra and underwear set worn in camel pose, natural comfort for yoga and low-impact exercise.
Side view of woman wearing BRANWYN eco-friendly Busty Bra in Natural White, Merino bralette for large chested women.
Woman stretching in BRANWYN Essential Busty Bra in Natural White, moisture-wicking merino bra for yoga, hiking, and movement.
Hula hooping in BRANWYN sustainable Essential Busty Bra and Merino leggings, odor-resistant activewear for women.
Yoga pose in sunlight, woman in BRANWYN Essential Busty Bra in Natural White made from soft Merino wool.
Front view of BRANWYN Essential Busty Bra in Future Dusk, Eco friendly merino Wool Bra.
Front view of BRANWYN Essential Busty Bra in Future Dusk, Merino bralette designed for busty women.
Front view of a model wearing BRANWYN natural fiber and plastic-free Seamless Merino Wool Essential Busty Bra in Transformative Teal.
Model wearing BRANWYN Sustainable Seamless Merino Wool Essential Busty Bra in Transformative Teal.
Front view of a model wearing BRANWYN Natural fiber Seamless Merino Wool Essential Busty Bra in Transformative Teal.

Essential Busty Bra

$62.00 USD
2754 reviews
2754 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
Quantity:
Color:Black
Size:XS
In Stock

Busty Bra 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.

C/D DD F G
28 XS XS XS XS/S
30 XS/S XS/S XS/S S
32 S S S S/M
34 M M M M/L
36 M/L M/L M/L M/L
38 L L L L/XL
40 XL XL XL XL/XXL
42 XL/XXL XXL XXL XXL
44 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.

Busty Bra 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.

C/D DD F G
28 XS XS XS XS/S
30 XS/S XS/S XS/S S
32 S S S S/M
34 M M M M/L
36 M/L M/L M/L M/L
38 L L L L/XL
40 XL XL XL XL/XXL
42 XL/XXL XXL XXL XXL
44 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.

The award-winning Essential Busty Bra is a seamless Merino wool bra offering low-impact support without restriction. Crafted with our proprietary GLDNspun™ Merino wool, it keeps you comfortable, breathable, and odor-resistant all day.

Best for light activity and everyday wear, this underwire-free design eliminates digging while maximizing mobility. Convertible straps can be worn straight or crossed for added support.

Our Busty Bra reminds you how comfortable it feels to be in your own skin. If you’re between sizes, we recommend going up one size.

Bonus: All our GLDNspun™ seamless Merino wool bras are:

  • ZQ+ certified Merino wool
  • OEKO-TEX 100 certified
  • Woolmark certified
  • RWS certified
  • Certified BPA-free and PFAS-free

Double Bonus: We hear it all the time… Our Busty Bra really feels like going braless—but with the gentle support you need.

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

COMPLETE THE SET

Woman standing with hands on her hips in black compression leggings made of Merino Wool by BRANWYN. Back view of a woman in black Merino leggings for women. These Merino tights are warm enough to wear as a winter baselayer for skiing and hiking.
Essential Compressive Legging 28"
$158.00 USD
Side view of woman wearing grey high waisted Merino underwear by BRANWYN. The Essential Hipster high waisted comfortable women's panties. Woman wearing BRANWYN's Essential Hipster: light grey high waisted Merino Wool Underwear and matching Merino Wool bra.
Essential Hipster
$40.00 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.*