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Color: Black
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Color: Black

Size:

Size:

Size and Fit Guide

Mix & Match: 3+ for $20 each
Rewards Members Earn 0 Points

Momenta Racerback Sports Bra

$68.00 CAD

10% off Bra & Underwear Sets*
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Medium support sports bra

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Works as a workout top

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Cool mesh ventilation

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Hardware-free design

Cassaerea is a 34G and wears a Knix size M++| Black

Cassaerea is a 34G and wears a Knix size M++

| Black
Cassaerea is a 34G and wears a Knix size M++| Black

Cassaerea is a 34G and wears a Knix size M++

Cassaerea is a 34G and wears a Knix size M++| Black

Cassaerea is a 34G and wears a Knix size M++

Cassaerea is a 34G and wears a Knix size M++

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 68 Points

"...keeps her cooler and drier than other sports bras"

- NBC News

Medium Impact Support

This smooth racerback style provides medium support, featuring sewn-in padding and stretchy fabric for comfort and security.

Feels Made For You

The racerback style pulls over your head easily and features zero hardware. The seamless, stretchy knit fabric feels like a second skin.

Functional Style

Suitable for various activities and workouts. Underband mesh provides ventilation.

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Cassaerea is a 34G and wears a Knix size M++| Black
| Black
Cassaerea is a 34G and wears a Knix size M++| Black
Cassaerea is a 34G and wears a Knix size M++| Black

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
4.4
Rated 4.4 out of 5 stars
Based on 667 reviews
Total 5 star reviews: 455 Total 4 star reviews: 110 Total 3 star reviews: 45 Total 2 star reviews: 21 Total 1 star reviews: 36
87%would recommend these products
ComfortRated 4.4 on a scale of 1 to 5
FitRated -0.2 on a scale of minus 2 to 2
SupportRated 4.1 on a scale of 1 to 5
667 reviews
  • Rated 5 out of 5 stars
    2 weeks ago
    Make more colours!

    This is the only sports bra I’ve ever found that comes remotely close to fitting my large cup and small band/shoulder size well enough to work out in - I wish it came in more colours!

    Megan
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    the MOST comfortable sports bra I've owned

    I have big boobs and needed a good bra for running (high impact) - this one is it.

    It's comfortable as hell, it's got a mesh vent in the bottom front that helps things air out, the sweat wicking is magical. I worried about how hard it would be to get off when I was sweaty and tired since it's a pull on, but it goes on and off easier than any other pull on sports bra I've owned. As someone else mentioned, the sewn in pads really are easy to adjust. Everything stays where it's supposed to, nothing rubs. I've used it 3 times and am already looking to buy more.

    Lisa R.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Soft and smooth sports bra

    This bra fits well. True to size.

    Seems a bit tighter than my first one. But my original may have stretched a bit.

    I like the cups that are partially sewn in.

    Mary H.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Love!

    This is such a great sports bra. Great support for working out and looks great to wear on its own - great for this hot weather! Bought in both colours - please bring more fun prints in this one!

    Stephanie W.
    Verified Buyer
  • Rated 3 out of 5 stars
    1 month ago
    The sizing chart isn’t the best

    I like the bra but it’s not as comfy as the others I have.

    It tough to get on overhead and it kinda rolls underneath the cups. I had to return my regular size to get the next size down and then it was fine.

    Lisa J.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Great product

    Very comfortable and gives the support I wanted. Always pleased with everything I order from Knix.

    Louise S.
    Verified Buyer
  • Rated 4 out of 5 stars
    1 month ago
    Sports Bra

    Sports bras need an adjustment period. I'm still getting used to it.

    Victoria E.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Love this bra!

    So comfy, fits well and great support. Even when it is hot in summer, this bra is my go to!

    Jackie E.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Good purchase.

    Like it. Will order other colours.

    Charlotte D.
    Verified Buyer
  • Rated 2 out of 5 stars
    2 months ago
    Poor fit (for me)

    I’m usually a medium, but the medium fit was off. The band was too high up, such that it felt like it was riding up on the bottom of my breasts. So I went for a large, which fits okay in the torso length but after a few wears now gapes at the back so I’ll be donating it. I’ve never had this fit issue before so I don’t think it’s that my body is that different from everyone else.

    For reference, I’m 5’8”, 147lbs, and have a small bust of 34 inches and under bust of 31 inches and I was using this bra for running.

    HK
    Verified Buyer
  • Rated 5 out of 5 stars
    2 months ago
    Love it!

    You can wear these with anything especially a low cut tank top!

    Jaime K.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 months ago
    Great sports bra

    This is super comfortable. It felt a little snug putting it on the first time, but it actually feels very supportive and not restrictive. The vent is great, I wear it to kickboxing and there’s definitely less sweat to wipe away under the breasts afterwards compared to my other sports bras.

    Terri C.
    Verified Buyer