4.5
Rated 4.5 out of 5 stars
6,636 Reviews

Catalyst Sports Bra

Our highly popular high-impact bra that handles your hardest workouts.
$75.00 USD
Sydney is a 34A and wears a Knix size 1
Product image
Sydney is a 34A and wears a Knix size 1
Sydney is a 34A and wears a Knix size 1
Sydney is a 34A and wears a Knix size 1
4.5
Rated 4.5 out of 5 stars
Based on 6,636 reviews
ComfortRated 4.5 on a scale of 1 to 5
SizingRated -0.1 on a scale of minus 2 to 2
SupportRated 4.6 on a scale of 1 to 5
91%would recommend these products
Write a Review (Opens in a new window)
6,636 reviews
  • Carolina E.
    Verified Reviewer
    2 days ago
    Rated 5 out of 5 stars
    The best sports bra, especially for bigger breasts

    I love this sports bra. I wear a size 8 and I use wear this bra for running and HIIT classes. Nothing else compares to how comfortable and supportive this bra is, really! I would love to see a dark green, navy, and chocolate brown for fall.

    ComfortRated 5.0 on a scale of 1 to 5
    SizingRated 0.0 on a scale of minus 2 to 2
    SupportRated 5.0 on a scale of 1 to 5
    Was this helpful?
  • Beth
    Verified Buyer
    3 days ago
    Rated 5 out of 5 stars
    Love the catalyst sports bras!

    Perfect fit and firm support. I wear my catalyst sports bras with everything!

    ComfortRated 5.0 on a scale of 1 to 5
    SizingRated 0.0 on a scale of minus 2 to 2
    SupportRated 5.0 on a scale of 1 to 5
    Was this helpful?
  • Dale K.
    Verified Buyer
    3 days ago
    Rated 5 out of 5 stars
    Wow now that’s a sports bra

    I’m a bit chesty and find it hard to find a bra that has enough support for starters. I’m a 36DD. Not only does this bra have great support for running etc but it’s comfy.

    ComfortRated 5.0 on a scale of 1 to 5
    SizingRated 0.0 on a scale of minus 2 to 2
    SupportRated 5.0 on a scale of 1 to 5
    Was this helpful?
Reviews LoadedReviews Added
Bras

BrasArrow 2

Leggings

LeggingsArrow 2

Shorts

Shorts & SkortsArrow 2

Tops

TopsArrow 2

Training Sets

Training SetsArrow 2

Training Sets

Whatever way you choose to move, Knix has the perfect set to support your practice.

Rain or Shine Training Set

Rain or Shine

Your full outfit to go after your goals on any day, in any environment. Includes the Pursuit Training Jacket, Engage Medium Impact Sports Bra and Pursuit Leakproof Training Short in your choice of colors.

SHOP NOWTikTok
Matchpoint Training Set

Matchpoint

Includes the LeakStrong™ Leakproof Skort and  HiTouch™ Active Contour Tank in your choice of colors.

SHOP NOWTikTok
Full Focus Training Set

Full Focus

Includes the Engage Medium Impact Sports Bra and HiTouch™ High Rise Legging with Piping in your choice of colors.

SHOP NOWTikTok
High Impact Training Set

High Impact

Our highly popular high-impact bra and ultimate training pant. Includes a Catalyst Front Zip Sports Bra and a Pursuit Leakproof Training Legging in your choice of colors. 

SHOP NOWTikTok