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| Warm Sand
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Home / Swim / Cinch Leakproof Shaper One Piece Swimsuit
Sale

Cinch Leakproof Shaper One Piece Swimsuit

$98.00 CAD

$140.00

30% off
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Absorbs about 1 regular tampon

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Medium coverage

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Sporty scoop neckline

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Premium UPF 50+ fabric

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Machine washable

Jay is a 30F, has 36

Jay is a 30F, has 36" hips and wears a Knix size XS+

Jay is a 30F, has 36

Jay is a 30F, has 36" hips and wears a Knix size XS+

Jay is a 30F, has 36

Jay is a 30F, has 36" hips and wears a Knix size XS+

| Lush Green
Jay is a 30F, has 36

Jay is a 30F, has 36" hips and wears a Knix size XS+

| Lush Green
Lace up back for customized cinching power | General

Lace up back for customized cinching power

Special contouring panels for shaping | General

Special contouring panels for shaping

Jay is a 30F, has 36" hips and wears a Knix size XS+

Absorbency: Light
Drop
Drop
Drop
Drop
Drop

Color: Lush Green Limited Edition

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.

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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.
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Swim in Style

A lace up style featuring a unique contouring construction that provides a snug fit.

Worry-Free Protection

Discreet, built-in protection that absorbs about 1 regular tampon worth of liquid.

Stay Sun-Safe

Premium UPF 50+ fabric shields you from UV rays while you relax, swim, and play.

Zoom

Jay is a 30F, has 36
Jay is a 30F, has 36
Jay is a 30F, has 36
| Lush Green
Jay is a 30F, has 36
| Lush Green
Lace up back for customized cinching power | General
Special contouring panels for shaping | 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
LEAKPROOF SWIM WORKS IN LAYERS

Built-in protection that feels like nothing at all.

Just like regular swimwear—but better! Non-swelling liner and patented no-show design.

Soft Top Layer

Top Layer

Smooth and comfortable liner in swimsuit fabric.

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3.6
Rated 3.6 out of 5 stars
Based on 41 reviews
Total 5 star reviews: 18 Total 4 star reviews: 7 Total 3 star reviews: 5 Total 2 star reviews: 4 Total 1 star reviews: 7
66%would recommend these products
ComfortRated 3.5 on a scale of 1 to 5
FitRated -0.7 on a scale of minus 2 to 2
SupportRated 4.3 on a scale of 1 to 5
EffectivenessRated 4.3 on a scale of 1 to 5
Ease of UseRated 3.3 on a scale of 1 to 5
Write a Review (Opens in a new window)
41 reviews
  • Rated 1 out of 5 stars
    1 week ago
    disappointing

    As other reviewers have mentioned, it's really difficult to get on, even if you size up. Aside from that, this swimsuit fades terribly- I've been a competitive swimmer all my life and never had a suit lose its colour like this after only a couple of months. It would be okay if it faded uniformly, but it's faded and yellowed unevenly so that the chest, bellybutton, and crotch are bleached out, making it really embarrassing to wear in public. No idea what's going on with this product as I've never had a swimsuit react like this, and it's not the quality I expect from Knix.

    Hannah
    Verified Reviewer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    New swim favourite

    Great fit and support. My belly shrink, by back was supported and I felt confident.

    Andrea C.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    2 months ago
    4 Stars

    Beautiful but size up! Its a tight squeeze in my regular size

    G.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 months ago
    Lovely shape and color

    This is a very lovely color and the fabric is high quality. It can be tricky to get in the first time, it fits true to size and keeps everything in place. The back can be challenging as there are laces, but looks very cute once you figure it out.

    Jac C.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    3 months ago
    Love this shaping swim suit!

    I absolutely love it but i wish it had a little bit more butt coverage and without the leakproof feature.

    Shira B. P.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    5 months ago
    Amazing quality and shaping

    So impressed by the quality of this swimsuit. Very durable, great fit and cinches waist! Fits true to size but if you're unsure I would size up. My torso is a bit short for the suit and I don't fill the bottoms as well, but it's not an issue of the swimsuit and it still looks great. The straps fit well but I needed to extend to its full length or the arms would have been too small.

    I'm 5'3" and about 120 lbs

    Shannon
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    5 months ago
    Super cinched!

    The bathing suit definitely holds you in and is very flattering. I had to size up as it's super structured, but incredibly happy with the final look.

    Jo M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    5 months ago
    Fantastic

    At first I thought I wouldn't be able to get it on but like most Knix products, it stretches. Fits great and keeps everything in place. I would highly recommend.

    Maria M.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    7 months ago
    4 Stars

    Fits too small- and I couldn’t return it. Def size up.

    kirsten
    Was this helpful?
  • Rated 1 out of 5 stars
    7 months ago
    So incredibly tight

    I ordered up a size from what I normally order in Knix and still felt like the life was being squeezed out of me in this bathing suit. It was a huge disappointment. I tried to gift it to someone smaller than me and they said it was too tight to comfortably wear. It seems like over the top compression for a swimsuit.

    Colleen N.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    8 months ago
    Love your product!

    Love the colour design. I bought this as a gift for my sister’s 84th birthday!

    Mary E. B.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    8 months ago
    Very small fitting

    Very small fitting which I didn't expect. Couldn't get over my hips and way to short in the body

    Deborah L. G.
    Verified Buyer
    Was this helpful?