Your Bag

Your cart is empty

But you're full of potential..

You Might Also Like

| Black
Light Leakproof Lace French Cut
$12.00 CAD

$25.00

Color:
Sale

Color: Black

Size:

Size:

50% off
Rewards Members Earn 0 Points

Suggestions

Top Sale Picks

The One&Only Scoop Bra®

$39.00 CAD
$65.00
40% off

Color: Rose Water

Super Leakproof® No-Show French Cut 3-Pack

From 
$57.60 CAD
$96.00
40% off

Essential Lace Bikini

$11.00 CAD
$22.00
50% off

Color: White

Super Leakproof® Dream Short

$36.00 CAD
$48.00
25% off

Color: Cheetah Print Limited Edition

Home / Best of the Best Sale / Catalyst Sports Bra
Flash Sale ⚡️

Catalyst Sports Bra

$63.75 CAD

$85.00

Up to 30% off
Checkmark

Our most supportive sports bra

Checkmark

Eliminates bounce by 76%

Checkmark

Ventilation for increased airflow

Checkmark

Full coverage design

Adiya is a 36C and wears a Knix size L | White

Adiya is a 36C and wears a Knix size L

| White
Adiya is a 36C and wears a Knix size L | White

Adiya is a 36C and wears a Knix size L

| General
| White
Adiya is a 36C and wears a Knix size L | White

Adiya is a 36C and wears a Knix size L

Adiya is a 36C and wears a Knix size L | White

Adiya is a 36C and wears a Knix size L

| General

Adiya is a 36C and wears a Knix size L

Color: White

Size:

True to Size

•

Size:

Size and Fit Guide

Free Shipping on orders $100+

Shipping

Shipping
Processing Timelines

Please allow 1-2 business days for our warehouse team to pack and ship your order. During peak periods such as sales, holidays and product launches, please allow up to 4 business days for us to process your order.

Delivery Time

For the most up-to-date delivery time estimates, please refer to the shipping timeline at checkout. Delivery timelines vary depending on location and do not include processing times.

Shipping Charges

Orders over $100* CAD = Free Shipping (2-6 business days)
Orders under $100* CAD = $12 CAD Shipping (1-3 business days)
Orders delivering to NWT, Nunavut and Yukon are subject to $20 delivery fee.
*After discounts, before shipping and taxes.
Easy Returns within 30 Days

Returns

Returns
Free Returns

Knix covers the return shipping fees for exchanges and refunds initiated through our Return & Exchange Portal. Exchange orders initiated through our Return & Exchange portal are also eligible for free shipping within the USA and Canada. Please note, the shipping fees on your original order are non-refundable.

Return Policy

Return policy varies by product, please check if your item is refund or exchange eligible by viewing our full policy here.

Sale & Last Call

Items discounted below 30% are eligible for size exchange or store credit. Items discounted 30% and above are final sale – no refunds, store credits, or exchanges can be accommodated.
Rewards Members Earn 63 Points

"It’s the only sports bra for bigger boobs I've tried that keeps bounce to a minimum when running."

- SELF

You May Also Like

Revolution Adjustable Pullover Bra

$65.00 CAD

Leakproof UltraThin No-Show High Rise

$32.00 CAD

Revolution V-Neck Bra

$51.00 CAD
$68.00

High Impact Support

You are in control of your performance with our most supportive, full-coverage sports bra.

Feels Made For You

The traditional adjustable hook and eye back closure, featuring five rows, allows you to find the perfect fit easily.

Functional Style

The breathable, moisture-wicking fabric and ventilation in the front help you stay cool throughout your workout. Made with encapsulated cups for maximum support and a locked-in feel, this bra reduces overall breast movement by 76%*.

*During treadmill running; based on the University of Portsmouth Research Group in Breast Health study, 2018.

Zoom

Adiya is a 36C and wears a Knix size L | White
| White
Adiya is a 36C and wears a Knix size L | White
| General
| White
Adiya is a 36C and wears a Knix size L | White
Adiya is a 36C and wears a Knix size L | White
| General

How to Choose?

Essential

Drop
Drop
Drop
Drop
Drop
  • • Everyday Wear
  • • No leakproof protection
  • tsp
    0 tsp

Heavy

Drop
Drop
Drop
Drop
Drop
  • • heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    6-11 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 3-6 super tampons
  • cup
    about 1-2 menstrual cups

Light

Drop
Drop
Drop
Drop
Drop
  • • light period days
  • • sweat
  • • sweat and discharge
  • tsp
    about 1-3 tsp
  • pad
    about 1-3 pantyliners
  • tampon
    about 1-3 regular tampons
  • cup
    about 0.5 menstrual cups

Moderate

Drop
Drop
Drop
Drop
Drop
  • • moderate period days
  • • light bladder leaks
  • • sweat
  • tsp
    about 3-6 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-3 super tampons
  • cup
    about 0.5-1 menstrual cups

Ultra

Drop
Drop
Drop
Drop
Drop
  • • extra heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    13-17 tsp
  • pad
    3.5-4.5 regular pads
  • tampon
    7-9 super tampons
  • cup
    2-3 menstrual cups
HIGH IMPACT SPORTS BRA

Elevate your performance. Engineered for movement.

The encapsulated cups provide maximum support for a locked-in feel that reduces overall breast movement by 76%*.

High Impact Bra

High Impact Support

Combines breast encapsulation and compression for maximum impact support.

Explore Best-Sellers
4.5
Rated 4.5 out of 5 stars
Based on 5,155 reviews
Total 5 star reviews: 3.7k Total 4 star reviews: 780 Total 3 star reviews: 263 Total 2 star reviews: 163 Total 1 star reviews: 219
90%would recommend these products
ComfortRated 4.5 on a scale of 1 to 5
FitRated -0.3 on a scale of minus 2 to 2
SupportRated 4.6 on a scale of 1 to 5
Write a Review (Opens in a new window)
5,155 reviews
  • Rated 5 out of 5 stars
    Yesterday
    Fits perfect.

    Very comfortable and fits perfect. Doesn't let you bounce!

    Kandiace P.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    2 days ago
    vraiment très mal fait pour les fortes pointrines

    J'ai suivi le guide des tailles donc logiquement, je fais du XXL.

    Et bien, c'est très sérré, mes seins sont compréssés et les bretelles bien trop petites.

    Je suis très déçue d'autant que c'est non retournable.

    julie F.
    Was this helpful?
  • Rated 5 out of 5 stars
    3 days ago
    Love this sports bra!

    Excellent sports bra for tennis!

    Love how you’ve changed the straps so they don’t come undone during a match!

    No more asking my mate to fix it on court or running to the loo to fix it myself! lol

    Shirley B.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    6 days ago
    Changed

    So disappointed in this bra now. I have worn this style previously and loved it! Sizing has changed and how the straps are adjusted has changed. Measured according to guide lines and not a good fit at all.

    Loretta
    Verified Buyer
    Was this helpful?
  • Rated 2 out of 5 stars
    6 days ago
    Catalyst Sports Bra

    I have been wearing these bras for several years and loved them but when I ordered this time the sizing had changed. I went from a 1 to a medium. Unfortunately the fit changed as well. This new version is no longer a smooth. The straps in front buckle and are so close together they show, which was not the case before.

    Rebecca L.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Lover this sports bra.

    I work out in the morning and some days I wear it all day its so comfy.

    Cheryl T. T.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Great support

    Comfortable and great support. Love the wider shoulder straps.

    Marlene H.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    1 week ago
    Good fitness bra

    It's a good fitness bra, but waiting for the zip front sports bra to come back in stock, that one is amazing

    Kerry D.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Great for larger chests

    I love this bra! It's my third time re-purchasing it. It's great if you have a larger chest and workout and want to keep your boobs from moving too much. It probably compresses about half a cupsize. The wide straps and breathable fabric make it great for support during workouts. I also wear it during the day, it gives great lift and structure without giving a uniboob. Will be purchasing again in more colors.

    Sarah M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    PLEASE BRING BACK THE LADDER STRAPS

    Amazing bra for big busts! My only disappointment is that the new straps loosen throughout the day so i have to keep shortening them so i dont have unsupported saggy boobs. I wish the ladder straps were still an option because they are the best - they may come undone in the wash sometimes but I would still prefer that to loosening all day while i am wearing them. Please bring back the ladder straps!! I have to keep repairing my old one since you no longer make them.

    Rebecca
    Verified Reviewer
    Was this helpful?
  • Rated 4 out of 5 stars
    2 weeks ago
    4 Stars

    Fit is great. Only thing is the bra pinches the upper inside of arm. Will need to return.

    Elaine
    Was this helpful?
  • Rated 4 out of 5 stars
    2 weeks ago
    4 Stars

    Fit is great. Only thing is the bra pinches the upper inside of arm. Will need to return.

    Elaine
    Was this helpful?