Catalyst Sports Bra
10% off Bra & Underwear Sets*
Catalyst Sports Bra
10% off Bra & Underwear Sets*
You’re in control of your performance in our most supportive sports bra ever. Made with encapsulated cups for maximum support and a locked-in feel, this bra reduces overall breast movement by 76%*.
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.
*During treadmill running; based on University of Portsmouth Research Group in Breast Health study, 2018.
• Encapsulated cups reduce movement
• High impact support
• Full coverage design for secure fit
• Adjustable back straps
• Ventilation for increased airflow
• Hook-and-eye back closure
• Easy on and off
The fabric is designed to feel snug at first but relaxes with wash and wear for a perfect fit.🇨🇦 Free standard shipping over $100.
(after discounts, before shipping + taxes) All items ship from within Canada.
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.
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.
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!
We always suggest basing your Knix size right off your measurements in inches. You can find instructions on how to measure, plus our bra size calculator here.
- Elizabeth G.Verified BuyerCurrent Cup Size DCurrent Band Size 38Purchased Knix Size - Catalyst 1Usage - Bras Sport22 minutes agoCurrent Cup Size DCurrent Band Size 38Purchased Knix Size - Catalyst 1Usage - Bras SportRated 5 out of 5 starsThe BEST bra, ever!
mfort! The best non-wire bra I’ve bought. I’ll never go back to wire bras!
ComfortRated 5.0 on a scale of 1 to 5Poor ExcellentFitRated -1.0 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? - Jo-Anne D.Verified BuyerPurchased Knix Size - Catalyst 7++Usage - Bras Everyday5 days agoPurchased Knix Size - Catalyst 7++Usage - Bras EverydayRated 5 out of 5 starsTriple Threat - this bra does it all!
Great support, so very comfortable and no sacrificing shape or style! XL ++ provides support and stability H cup and works with all my summer tops and dresses , with smooth seam free styling and is comfortable for long days,
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? - lorelai f.Verified BuyerCurrent Cup Size GCurrent Band Size 34Purchased Knix Size - Catalyst 6++Usage - Bras Sport1 week agoCurrent Cup Size GCurrent Band Size 34Purchased Knix Size - Catalyst 6++Usage - Bras SportRated 5 out of 5 starsbest for riding horses
i ride horses almost daily and this bra is amazing at keeping the girls in line! those suckers don’t move! i am a 34G and i got M++ and it fits great!
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?
