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Quantity
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4.4
76 ratings
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Best Sports bra ever!
And now that they come in M++, they fit my 34F chest better. So comfortable that I often wear as a daily bra—one that is ready for action yet easy to wear all day. Please keep the cute and colorful patterns coming!
Kimberley · September 29, 2026
A must have for horseback riding!
I got this bra for my riding lessons to help with the "bounce" while trotting, and it works like a CHAMP. I am so impressed at how well this bra hold me in!
Meagan · September 30, 2026
Not the Same Catalyst Sports Bra I Have Purchased in the Past
I have been a Knix customer for a few years and was a big fan of their Catalyst Sports Bra. I'm sorry to say that when they changed their sizing guide, it was more difficult and not as accurate as their previous sizing guide. I had lost weight recently and sought guidance on how to get the right size. I used their sizing chart and didn't believe the size it told me to purchase, but purchased anyway based on what the sizing chart said. Big mistake. The fit was ridiculously small in cup size. I had a chat with a Knix representative, but even then was told to buy the same size. I disagreed vehemently with the recommendation and decided to go up a cup size. I'm still not confident that I am in the correct size, because, to put it bluntly, I'm falling out all of the place. For the price of the Catalyst Sports Bra, I don't think I will buy any more from Knix, because I just can't find the right fit. I also think they have changed the bra somewhat. Regardless of the cup size issue, the band doesn't seem to fit against my body in the front. The gap allows my breasts to fall out from underneath, so I am constantly having to adjust myself. I also feel the material isn't the same. Overall, this has just not been a good experience this time around.
Mary · September 15, 2026

