Catalyst Front Zip Sports Bra

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.

Wireless Bra FAQs

Yes, our Revolution Bra has removable cups.

Sizing can be a bit tricky and Knix sizing might be a bit different than what you’re used to, but we've got you covered! You can check out all of our size charts here or book a Virtual Fitting here

The way that we size our bras at Knix is to allow different body types to fit into one size. The flexible 5 row hook & eye back closure accommodates your personal preference and level of comfort for the underband.


No, all Knix bras are wireless! Wireless bras give you freedom to move and feel your most comfortable and confident self.

Yes, you do. 

Your underband measurement will equal an alpha size. 

For example: 

XXS =28Band, XS=30Band, S=32Band, M=34Band, L=36Band, XL=38Band, XXL=40Band, XXXL= 42Band 

Regular size cups cover =  A - DD 

Plus sizes cups cover =  E - G


We recommend scheduling a Virtual Fitting with a Knix Expert or consulting with a team member in-store.

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average rating 4.2 out of 5
Based on 3168 reviews
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81% of reviewers would recommend this product to a friend
Comfort
Rated 4 out of 5
Fit
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Support
Rated 4 out of 5
3168 Reviews
Reviewed by NG
Verified Buyer
Catalyst Front Zip Sports Bra
Reviewing
Catalyst Front Zip Sports Bra
I don't recommend this product
Rated 2 out of 5
Review posted

Zipper Overcomplicates

This bra fits well and it is comfortable. I use it for at-home workouts but I would not wear it out because the zipper has a tendency to pop forward.

When I put on the bra it looks perfect and as long as I'm not moving around too much it stays in place. As soon as I do a 30 min pilates session, though, the top of the zipper ends up popping forward creating a bit of a peek-a-boo situation into my cleavage (don't love it). I

will go for the Catalyst without a zipper next time I am looking for a sports bra though because the fit is otherwise good and the thick cross straps in the back provide excellent support.

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Comfort
Rated 5 out of 5
Fit
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Support
Rated 4 out of 5
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Reviewed by Norma B.
Verified Buyer
Catalyst Front Zip Sports Bra
Reviewing
Catalyst Front Zip Sports Bra
I recommend this product
Rated 5 out of 5
Review posted

Bras

I love the supportive fit of Knix bras.

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Comfort
Rated 5 out of 5
Fit
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Support
Rated 5 out of 5
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Reviewed by F
Verified Buyer
Catalyst Front Zip Sports Bra
Reviewing
Catalyst Front Zip Sports Bra
I recommend this product
Rated 5 out of 5
Review posted

Amazing bra, easy to put on, lots of support

I wish I had ordered more of these because they are the best bra I could find that provides support AND is easy to put on (I have shoulder issues). Front zip is a life saver. I am disappointed that this style is being discontinued. Hoping the new style will be something similar.

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Comfort
Rated 5 out of 5
Fit
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Support
Rated 5 out of 5
Was this helpful?