95% Australian superfine merino
Soft, breathable, premium natural fibre.
Naturally odour-resistant
Stay fresh longer between washes.
Temperature regulating
Comfort across warm + cool days.
OEKO-TEX® certified
Made with care for sensitive skin.
The Merino Sports Bra (Crossback) is women's natural fibre activewear — a merino wool sports bra made from 95% merino wool, with no polyester. A non toxic alternative to synthetic sports bras, designed in Australia for sensitive skin.
Soft, breathable comfort - even when you sweat.
This merino wool sports bra feels comfortable on the skin without the slick, synthetic feel of polyester.
The slim 1cm crossback straps and curved V-front neckline create a clean, flattering fit, while removable padding allows you to adjust coverage for training or everyday wear.
95% merino wool, 5% elastane – natural performance without plastic-heavy fabrics
Breathable & odour-resistant – wear more, wash less
Soft, supportive stretch – no dig-in, no cling
Slim crossback straps – minimal feel with full freedom of movement
Flattering V-front neckline – clean, feminine shape
Removable padding – adjustable coverage
Lightweight & shape-holding – keeps its fit over time
Designed in Australia using premium ultra-fine merino fibres
No plastic feel when sweating
Gentle on sensitive or hormonal skin
Comfortable enough to wear beyond workouts
Mays (170cm) wears size 12
Emily (167cm) wears size 8
Overall rating: 5.0 / 5 from 24 reviews.
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"Estroni's peices are some of the best natural fibre activewear I have tried. I am so impressed with the fabric quality, it feels tight fitting yet soft to touch, it is thick yet breathable. The styles of the crop is also extemely flattering. I really really love this piece!"
"I love this sports bra so much! Especially the criss cross straps and the vibrant red. It is super supportive and doesn’t dig in. Sits beautifully on the body."
"Obsessed! After having cancer in nearby lymph nodes next to where my bras sit, I have been looking everywhere for natural fibre sports bras for sweating in. I initially ordered from PACT but much prefer the fit of these merino wool ones :)"
"I love the look and feel of this sports bra. The indigo colour is amazing. Will definitely be purchasing again."
"Comfy fits to size feels refreshing to wear something that is good for your body"
"Super supportive bra, beautiful colour, perfect for all kinds of movement, will definitely be purchasing again!"
"I will be wearing this everyday, healthy on the boobs and super comfortable."
"Universally flattering fit including wide, thick padding. Most padding in sports bras is too narrow, thin and triangular - this really makes a difference! It fits my small chest well and seems to have lots of give for larger busts. I ordered black and it is a true black."
"Beautiful material, no change in quality wash after wash. No sweat marks, hot Pilates proof!!"
"Such a nice bra to be sweating in. Love the red colour it is gorgeous, and supportive. Also if just feels so comfortable soft and breathable for your skin."
