Oiselle Squared Up Bra
Review by Erin Trail
The Oiselle Squared Up Bra is a fun option for women athletes who want a sports bra with an adjustable band and A-C support. It’s also really cute and has an unexpected – but amazing – “magic” trick.

Details
- Fits A-C cups
- Two hook and eye closures with 3 positions for a custom fit at the centerback chest band
- Constructed with bluesign® approved materials
- Open back design
Detailed Review
I have pretty basic needs when it comes to a sports bra. I like it to fit and be comfortable. The Oiselle Squared Up Bra does just that and so much more.
The front of the Oiselle Squared Up Bra is fairly full coverage, coming up fairly high in the neckline with wide shoulder straps. There are removable cups, which I could do without, but also, they didn’t shift around in the wash like other removable cups tend to do. The fabric is Oiselle’s Plya fabric, which is a 76% Polyester, 24% Spandex blend, rated at medium compression.
I’ve been wearing the Oiselle Squared Up Bra for a wide variety of activities: running, cycling, lifting weights, and hot yoga.
The back design is what really makes the Oiselle Squared Up Bra stand out from the crowd. The open back looks really fun while you’re wearing it, giving things a bit of style. I also noticed that the design of the back of the bra, with the fabric going down my shoulder blades vertically gives an unexpected layer of support to my back. When wearing the Oiselle Squared Up Bra, I find myself naturally squaring my shoulders and keeping my chest more open.
I found the support and compression to be more than adequate. I felt comfortable but always able to take a full breath. The adjustable band gives the Oiselle Squared Up Bra sizing flexibility as well. The fabric breathed and moved well, even during 95+ degree hot yoga sessions.

And the magic trick I alluded to at the start of the review.
All women know the struggle of trying to wrestle a sweaty sports bra off when you’re done with your workout. It’s a real struggle.
But here’s the special sauce with the Oiselle Squared Up Bra. The hook and eye closure lets you open up the bra and then it just pops right off, even with you are soaked with sweat. Another fun party trick – one that I’ve never been able to do with a sports bra – is being able to take the Oiselle Squared Up Bra off without removing my shirt. I can just undo the clasps, put one arm inside my shirt, and the bra easily comes off without removing my shirt. My brain exploded – in a good way – when I realized I could do this in a sports bra.
Closing Thoughts
The Oiselle Squared Up Bra is a sweaty girl’s dream come true. The sports bra does all of the standard sports bra things (and does them well): support, comfort, breathability. But the design of the bra, with the open back and the hook closures are what gives this bra extra oomph. The styling is unique and fun. The adjustable back means that you spare yourself from the usual sweaty wrestling match of removing the bra after a workout. As for magic tricks, it’s up to you if you want to show those off with an audience or in private.
The Oiselle Squared Up Bra is available in several colorways (usually changing seasonally) in sizes ranging from 2 to 14.
Erin Trail
Trail Boss of Stoke



Erin is a former Montana park ranger with a degree in environmental engineering. She loves getting into technical details while putting her gear (and herself) through the paces. She shares her home in Colorado with her husband, Will, and her 3 cats (Zipper, Brewtus, and Simcoe).





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