Skip to content

Help
Returns & Exchanges
Shipping
Size Guides
Rewards
Virtual Fittings
Gift Card Balance
FAQs
Contact Us
Virtual FittingsBOOK NOW
Refer a FriendLearn More
About
Knix FundLearn More
Careers at KnixLearn More
Story & Mission
Why Leakproof?
Virtual Fittings
Store Locations
Ambassador Program
Careers
Rewards
Refer a Friend
Stores
Gift Cards
Blog

New
Categories
Shop All New
Best Sellers
Thigh Saver® Shorts
Ultra-Thin Leakproof Underwear
Sexy Mesh Collection
Citron Collection
Featured
New Swim is Coming - Get Early Access
Introducing Gabrielle Union
Sport Your Period.
Let's Talk Perimenopause
Gabrielle UnionShop now
NEW CitronSHOP NOW
Leakproof Underwear
Shop by Absorbency
Ultra
Heavy
Medium
Light
Lightest
Zero
All Underwear
Shop by Style
High Rise
Thong
Bikini
Boyshort
French Cut
Shorts & Boxer Briefs
Thigh Savers
Cheeky
Reusable Pads
Save on Period KitsShop Kits
Why Leakproof?SHOP NOW
Bras
Categories
All Bras
T-Shirt Bras
V-Neck Bras
Pullover Bras
Seamless Bras
Sports Bras
Maternity Bras
Find Your Fit
The Bra Guide
Take the Quiz
The Bra GuideLEARN MORE
NEW CitronSHOP NOW
Shapewear
Shop by Style
All Shapewear & Thigh Savers
Thigh Savers
Leakproof Shapewear
Tanks & Bodysuits
Leakproof ShapewearSHOP NOW
NEW Thigh SaversSHOP NOW
Swim
Categories
All Swim
Swim One-Pieces
Swim Tops
Swim Bottoms
Leakproof Swimwear
Sets & Accessories
Cover Ups
Teen Period Swim
Swim CollectionShop Now
Teen Period SwimSHOP NOW
Active & Apparel
Active
All Active
Sports Bras
Leggings & Shorts
Active Tops
Swim
Athleisure
Apparel
All Apparel
Loungewear
Sleepwear
Tanks & Bodysuits
Wardrobe Heroes
Maternity
Swim
Accessories
MaternitySHOP NOW
SleepwearShop Now
Teen
Categories
All Teen
Teen Period Underwear
Teen Thigh Savers
Teen Period Swim
Teen Period Kits
Teen Period Activewear
Teen Thigh SaversSHOP NOW
Teen Period SwimSHOP NOW
Sale

Sale

Catalyst Sports Bra - Ladder Strap - Sale

Britnee is a 40D and wears a Knix size 8

Britnee is a 40D and wears a Knix size 8

Britnee is a 40D and wears a Knix size 8

Britnee is a 40D and wears a Knix size 8

Britnee is a 40D and wears a Knix size 8

Britnee is a 40D and wears a Knix size 8

Britnee is a 40D and wears a Knix size 8

Britnee is a 40D and wears a Knix size 8

Britnee is a 40D and wears a Knix size 8

Britnee is a 40D and wears a Knix size 8

Mercedes is a 32DDD/E and wears a Knix size 6

Mercedes is a 32DDD/E and wears a Knix size 6

Mercedes is a 32DDD/E and wears a Knix size 6

Mercedes is a 32DDD/E and wears a Knix size 6

Brittany is a 36D and wears a Knix size 6+

Brittany is a 36D and wears a Knix size 6+

Britnee is a 40D and wears a Knix size 8

Sale

Catalyst Sports Bra - Ladder Strap - Sale

Our most supportive sports bra ever. And one that doesn’t give you the dreaded uni-boob. Keeping you in place while you move, this bra reduces overall breast movement by 76% (During treadmill running; based on University of Portsmouth Research Group in Breast Health study, 2018).

- Easy on & off
- High impact support
- Encapsulated cups to reduce movement
- Adjustable back straps
- Ventilated cups
- Hook & eye back clasps

The fabric is designed to feel snug at first but relaxes with wash and wear for a perfect fit.

Machine Washable: Wash with like colors. Machine wash cold with mild detergent on delicate, do not bleach, do not dry clean, do not iron, lay flat to dry. Help your bras last even longer with this handy wash bag.

Body: 59% Nylon, 41% Spandex
Lining: 86% Nylon, 14% Spandex

Free standard shipping over $100.

Free expedited shipping over $150.

(after discounts, before shipping + taxes) All items ship from within Canada.

EXCHANGE ONLY Items marked as "Sale" are exchange only. For items with a 20% or more discount you may exchange for another item or store credit. No refunds.

Contact Us Returns & Exchanges Shipping Product Testing and Safety FAQs Gift Card Balance

Rewards Size Guides Virtual Fittings Resources Store Locations

Story & Mission Sustainability & Philanthropy Careers Blog

Stay in the flow

Give $20Get $20

Privacy Policy
California Privacy Rights
Privacy Choices
Accessibility Statement

T-Shirt Bras

T-Shirt Bras

V-Neck Bras

V-Neck Bras

Sports Bras

Sports Bras

Pullover Bras

Pullover Bras

Seamless Bras

Seamless Bras

WATCH THE VIDEO

Our community tells us what makes a good WingWoman

You look amazing in Knix Bras

Thank you for sharing you in your Knix. Our community is everything.

Bra-Innovations MB

Bra-Innovations MB

More ways to feel unapologetically free

Find an amazing wireless bra to match your Undies. Plus explore our other products, all designed to make you feel so comfortable in your own skin.

Period Underwear EVERYDAY UNDERWEAR BRAS SLEEPWEAR ACTIVEWEAR APPAREL Shapewear Maternity

Value Prop

Value Prop

Home/
Shop Sale/
Catalyst Sports Bra - Ladder Strap - Sale

4.5

Rated 4.5 out of 5 stars

6,504 Reviews

4.5

Rated 4.5 out of 5 stars

6,504 Reviews

4.5

Rated 4.5 out of 5 stars

Based on 6,504 reviews

ComfortRated 4.5 on a scale of 1 to 5

Low High

SizingRated -0.1 on a scale of minus 2 to 2

Runs Small True to Size Runs Large

SupportRated 4.6 on a scale of 1 to 5

Low High

89%would recommend these products

Write a Review (Opens in a new window)

6,504 reviews

Sort

Tammy R.
Verified Buyer
5 minutes ago
Rated 5 out of 5 stars
Fantastic
Love it. Great support!
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?
Sid
6 hours ago
Rated 1 out of 5 stars
1 Star
It feels comfortable to put on, then the support is off. If you are doing any kind of hiit your chest will fall out the top. The straps only tighten a little bit. Do not waste your money.
Was this helpful?
Erin S.
Verified Reviewer
15 hours ago
Rated 1 out of 5 stars
Straps are to short
Bummed I bought 2 of these on sale thinking they were going to be my perfect sports bra but the straps are so short. And unable to return, waste of money.
ComfortRated 1.0 on a scale of 1 to 5
SizingRated -2.0 on a scale of minus 2 to 2
SupportRated 3.0 on a scale of 1 to 5
Was this helpful?

Loading...

Loading...

Reviews LoadedReviews Added

Bundle & Save

SHOP ALL

One&Only Bra™ Set - Bikini

One&Only Bra™ Set - Bikini

Amber has 38" hips and wears a Knix size M

Light Leakproof No-Show Thong

+13

Amber has 38" hips and wears a Knix size M

Light Leakproof No-Show Boyshort

+17

Jay has 36" hips, 27" waist and wears a Knix size S

Light Leakproof No-Show High Rise

+15

Mesh Deep V Bra Set - High Rise

Mesh Deep V Bra Set - High Rise

Tsanna has 34.5" hips and wears a Knix size S

Light Leakproof No-Show High Rise Thong

+1

Chloe has 47" hips and wears a size XL

Light Leakproof No-Show Cheeky

+6

Chloe has 47" hips and wears a size XL

Light Leakproof No-Show Bikini

+17

Ottavia has 44" hips and wears a Knix size L

Light Leakproof No-Show French Cut

+16