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.
• Encapsulated cups to reduce movement
• Easy front zip closure
• High impact support
• Full coverage design for secure fit
• Adjustable, cross back straps
• Ventilation for increased airflow
• Hook-and-eye back closure
The fabric is designed to feel snug at first but relaxes with wash and wear for a 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.
- JuliaVerified Buyer2 weeks agoRated 5 out of 5 starsVery supportive
Great fit for my large breasts feels good to work out!
ComfortRated 4.0 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 5.0 on a scale of 1 to 5Poor ExcellentEase of Use Rated 5.0 on a scale of 1 to 5Poor ExcellentWas this helpful? - PhoebeVerified Buyer2 weeks agoRated 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? - Elleny3 weeks 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!
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Your questions, answered.
Just as athletic gear has made it into our every day, so the lines dividing sports bras and regular bras have begun to blur. Just as you might wear yoga pants when doing many things apart from yoga, so you may find yourself reaching for your sports bra when there isn’t any physical activity in sight. But should you wear a sports bra every day? The answer is that it’s a personal choice. Some women go entirely braless, some blur the lines, and some observe strict distinctions between everyday, sports and “special” lingerie. Your cup size, comfort, confidence will all inform your decision.
Absolutely! No matter what item you’re shopping for, our Virtual Fittings will help. And they’re easy… For these sessions you’ll need either a soft measuring tape or a ribbon/string and a tape measure. If you’re shopping for a sports bra, we also suggest you wear a bra with no padding or light padding and a fitted t-shirt for the most accurate measurement.
Washing your sports bra is easy. For best results, machine wash on cold with mild detergent in a wash bag, and lay flat to dry. Always check the wash instructions on your specific bra though.
Absolutely! Our Sports Bras and Activewear often make it into everyday rotation and there’s absolutely nothing wrong with that! While our Activewear will support you through your toughest gym workout, they’re comfortable for more lowkey activities too.
Our Activewear offers gentle compression zones and support, so there are no concerns about wearing day in, day out, as activewear, athleisure, loungewear, brunch, shopping… you name it!