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| Black
Light Leakproof No-Show Bikini
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Best Seller

Color: Black

Size:

Size:

Size and Fit Guide

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Home / Bras / Catalyst Front Zip Sports Bra

Catalyst Front Zip Sports Bra

$88.00 CAD

10% off Bra & Underwear Sets*
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Our most supportive sports bra

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Ventilation for increased airflow

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Full coverage fit

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Easy on and off front zip

Sarah is a 34DD and wears a Knix size 6+ | Black

Sarah is a 34DD and wears a Knix size 6+

| Black
Sarah is a 34DD and wears a Knix size 6+ | Black

Sarah is a 34DD and wears a Knix size 6+

Sarah is a 34DD and wears a Knix size 6+ | Black

Sarah is a 34DD and wears a Knix size 6+

| General
Easy front zip closure | General

Easy front zip closure

Adjustable back closure and cross straps | General

Adjustable back closure and cross straps

Sarah is a 34DD and wears a Knix size 6+

Color: Black

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 88 Points

"Most supportive sports bra."

- Good Housekeeping

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High Impact Support

You are in control of your performance with our most supportive, full-coverage sports bra. Made with encapsulated cups for maximum support and locked in feel.

Feels Made For You

The traditional adjustable hook and eye back closure, featuring five rows, allows you to find the perfect fit easily. Easy front zip closure. Ventilation in the front helps you stay cool throughout your workout.

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.

Zoom

Sarah is a 34DD and wears a Knix size 6+ | Black
| Black
Sarah is a 34DD and wears a Knix size 6+ | Black
Sarah is a 34DD and wears a Knix size 6+ | Black
| General
Easy front zip closure | General
Adjustable back closure and cross straps | 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

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4.3
Rated 4.3 out of 5 stars
Based on 2,051 reviews
Total 5 star reviews: 1.3k Total 4 star reviews: 352 Total 3 star reviews: 164 Total 2 star reviews: 99 Total 1 star reviews: 130
85%would recommend these products
ComfortRated 4.3 on a scale of 1 to 5
FitRated -0.1 on a scale of minus 2 to 2
SupportRated 4.5 on a scale of 1 to 5
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2,051 reviews
  • Rated 5 out of 5 stars
    2 weeks ago
    5 Stars

    Amazing fit and so comfy!

    Julie
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    4 weeks ago
    Style

    I love the comfort and fit of this bra however the zipper sticks out from under any top I wear. My sister has the same issue. I hope the newer version has changed.

    Rayne J.
    Verified Buyer
    Was this helpful?
  • Rated 2 out of 5 stars
    1 month ago
    Fits small

    The bra is well made but fits small and the front zipper is really hard to zip. The bottom and top material constantly gets stuck

    Ma. A. W.
    Verified Buyer
    Was this helpful?
  • Rated 2 out of 5 stars
    1 month ago
    Does the job

    Great sports bra. I’m 5’6 1/2” 170lbs: although the XL I ordered fits very snugly and I would like a bit more coverage at the sides under my arms I feel I could have ordered XXL . I’m hoping the fabric will stretch with wear and I am losing weight so both these factors will affect the wear of the bra. The bra keeps everything in place otherwise. I especially like wide side panels and adjustment options.

    Patricia R.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Love it!

    Didn't expect to like it as much as I do. Fits really well and is so supportive.

    Maggie Z.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Great bra

    I can’t rave enough about how amazing this sports bra is

    Kim F.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    1 month ago
    Fits small impossible to zip up

    When you have a bigger chest, you need a sports bra that is compressive, but that you can actually get on.

    I think this bra might fit if I could actually hold the girls together long enough to get the zipper pulled up. The zipper is just to tough to pull up and the catch at the bottom is not strong enough to hold it together while I try to rein in the girls and pull that stubborn zipper up. Bought it on sale, so I can’t even return it!

    GJ
    Was this helpful?
  • Rated 4 out of 5 stars
    1 month ago
    great sports bra

    just a tad hard to get on for me, but great sports bra!

    ANGELA R.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    1 month ago
    1 Star

    Too small! Need a larger size. Hoping to exchange!! Crossing my fingers! Bras are really nice. Just too small.

    Lisa
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    1 month ago
    1 Star

    Uncomfortable and itchy, zipper pokes out of shirt

    Christine
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    1 month ago
    Protruding zipper 😕

    I’m a fan of the rear-closing catalyst so I thought I’d give the front-closure a try. I bought on final sale thinking there’d be no issue because I knew my size from the rear-closing catalysts I have. When done up the zipper protrudes forward and creates this big lump between breasts. I’ve adjusted all the straps but cannot get it to lie flat. Very unsightly and so disappointing. And now I’m stuck with 2 bras I can’t wear.

    LJ
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    1 month ago
    Staps

    Like the old version where the straps hooked onto a spot I find the slide straps slip down

    joan B.
    Verified Buyer
    Was this helpful?