Sisters Bra


Color: Black

Inspired by the engineering of suspension bridges, the Sisters Bra is designed for maximum security, support, and coverage at all points. The name alludes to the sisterhood in its design: two layers of construction working in harmony. An inner layer, which includes unique meshes and molded cups, while attaching those elements to an inner set of straps. This inner layer = encapsulation, supporting each breast. The outer layer and outer straps represent the compression, holding everything in place. The four-strap system more evenly distributes the weight, relieving strap pressure which can often cause pain or welting in the skin. The Sisters Bra is also higher on the neck, to minimize top bounce, with the two layers of mesh at the neck serving both form and function. Learn more about the Sisters Bra on the blog.

How to Determine Your Sports Bra Size


• Straps are covered, padded, and stable for minimal bounce
• 1.5” plush ribbed elastic chest band for comfort and heat management
• Double strap design evenly distributes weight, reducing pressure and pain
• Two layers of power mesh connects cups to inner straps
• Sewn in molded cups with perforation for heat release
• No-stretch power mesh liner to maintain shape and stability
• 2 hook and eye closures with 3 positions for a just-right fit
• Covered pad protects skin from hook and eye closure
• Plush Elastic with custom Oiselle birds design
• Compression level: 3


• Power Plya™ Compression. 78% polyester / 22% Spandex®

Learn more on our Fabrics page.

At Oiselle, our vision is to help all women feel strong and free through the joy of running. Our mission is to design great product, build the sisterhood, and improve the sport. May we all experience the transformative power of sports and community.

Customer Reviews

Based on 12 reviews
Too compressive for running

I bought this bra and a few others on the annual sale. Immediately was a struggle to get on but I tried a run with it anyway. I had to unclasp the back because I couldn’t breathe on the hills! Disappointed since I bought my normal cup and band size. No returns available either :( Maybe I’ll try buying a band extender.

Holy grail sports bra for busty folk

I used to be a Juno girly and am now a Sisters devotee. If this bra gets discontinued I will do crimes (joking, for legal reasons). Great support for running, horseback riding and HIIT without feeling constrictive.


Listen this is a high impact bra. Nothing is moving unless you move it. Lol great bra.

Good, almost great

I wear this bra to run ultramarathons. Holds up well and rarely chafes. I do wish it came in a B cup. The closest bra I’ve found to the beloved Juno but it doesn’t flatten you down as much as the Juno did.