Catalyst Front Zip Sports Bra
10% off Bra & Underwear Sets







Catalyst Front Zip Sports Bra
10% off Bra & Underwear Sets
Putting on this sports bra is light work. Made with encapsulated cups for maximum support and a locked-in feel, you’ll be covered to go the extra mile. Ventilation in the front helps you stay cool throughout your workout. And the traditional adjustable hook-and-eye back closure with five rows lets you easily find the perfect fit.
🇺🇸 Free standard shipping over $100*.
Free expedited shipping over $150*. Duty-free. (after discounts, before shipping + taxes)
All Knix bras are eligible for return or exchange within 30 days of delivery. We want to make sure you can give your new Knix products time to mold to your shape and get comfortable. For sale items with a 20% or more discount you may exchange for another item or store credit.
- PhoebeVerified BuyerYesterdayRated 5 out of 5 starsBest sports bra for running
I've tried many sports bras and this is the winner for running! For reference I'm a 34G and the 6+ size was perfect.
-Limits bounce without digging in or restricting breathing
-straps are comfortable
-smooth fabric
-relatively attractive (as much as possible for an intense sports bra). the shape of the bra is flattering
-minor cons: i don't like how the zipper gives a bump under shirts, also the straps make a squeaking sound when I run
ComfortRated 5.0 on a scale of 1 to 5Poor ExcellentFitRated 0.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeSupportRated 5.0 on a scale of 1 to 5Low HighWas this helpful? - Elleny5 days agoRated 5 out of 5 stars5 Stars
I’m currently 8 weeks post breast reduction and lift and recently returned to work, where I’m on my feet for about 12 hours. After trying three different high-impact bras that left marks and caused discomfort, I invested in the Catalyst bra, and it has been a game-changer. It fits like a glove, feels incredibly comfortable—almost like I’m wearing nothing—and provides excellent support with little to no movement while walking. I haven’t tested it with jumping yet, but so far, my chest stays completely secure. Definitely worth the investment!
Was this helpful? - CamillaVerified Reviewer3 weeks agoRated 5 out of 5 starsGreat support for sports
When I first put this bra on it felt weird and lumpy. Two washes and a few wears later, and it's smooth and super comfortable. The zipper front is perfect for accommodating my injured shoulder, and the adjustable back means I can customize the fit perfectly.
It provides great support for high-impact activities, keeping everything locked in place.
ComfortRated 5.0 on a scale of 1 to 5Poor ExcellentFitRated 0.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeSupportRated 4.0 on a scale of 1 to 5Low HighEffectivenessRated 4.0 on a scale of 1 to 5Poor ExcellentEase of Use Rated 5.0 on a scale of 1 to 5Poor ExcellentWas this helpful?