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| Black
Light Leakproof No-Show Bikini
$25.00 CAD

Color: Black
Best Seller

Color: Black

Size:

Size:

Size and Fit Guide

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

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Leakproof UltraThin No-Show High Rise

$32.00 CAD
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Super Leakproof® Dream Short

$48.00 CAD
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Home / Swim / Leakproof Classic One Piece Swimsuit

Leakproof Classic One Piece Swimsuit

$125.00 CAD

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Our #1 selling one-piece

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Built-in leak protection

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Premium UPF 50+ fabric

| Espresso
| Espresso
| Espresso
| Espresso
| Espresso
| General

Absorbency: Light

Light
Drop
Drop
Drop
Drop
Drop
about 1-3 regular tampons
Essential
Drop
Drop
Drop
Drop
Drop
No Absorbency

Color: Espresso 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.

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 125 Points

"Brilliant for unexpected spotting."

- Oprah Daily

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Classic Style

A fit we've spent years perfecting.

Stay Sun-Safe

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

Worry-Free Protection

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

Feels Made For You

Thicker, adjustable straps make it adaptable for different sizes and torso lengths. It features a shelf bra with removable cups and full bum coverage.

Zoom

| Espresso
| Espresso
| Espresso
| Espresso
| Espresso
| 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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The One&Only Scoop Bra®

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4.7
Rated 4.7 out of 5 stars
Based on 170 reviews
Total 5 star reviews: 140 Total 4 star reviews: 13 Total 3 star reviews: 10 Total 2 star reviews: 3 Total 1 star reviews: 4
93%would recommend these products
ComfortRated 4.9 on a scale of 1 to 5
FitRated 0.0 on a scale of minus 2 to 2
SupportRated 4.4 on a scale of 1 to 5
EffectivenessRated 4.7 on a scale of 1 to 5
Ease of UseRated 4.7 on a scale of 1 to 5
Write a Review (Opens in a new window)
170 reviews
  • Rated 3 out of 5 stars
    2 weeks ago
    3 Stars

    The fabric itself is quite good really comfortable but one thing i want to point out is the straps are sewn on quite badly there are loose strings and the width of the straps are very thin for ppl with broader shoulders not recommended. Also i wish they made the straps wider. Without the loose strings. The sewing is not great

    jessica
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    Knix swimsuit

    Great fit and top quality. I will start shopping at Knix going forward for many of my lingerie and sport needs.

    Sharon R.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 weeks ago
    Great Purchase

    Great, fit. Nice quality

    Holly S.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    Very comfortable.

    I bought this bathing suit in 3 different colours.

    Very comfortable style with great coverage.

    Maty Y.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Smooth like butter

    Love the feel of this bathing suit! Fits true to size. Really comfortable and soft. Very flattering!

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

    I love the fit. I love the comfort. The colour is lovely. Very comfortable to swim in.

    Kathleen S. G.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Awesome purchase!

    Fit and quality were great. Definitely recommend

    Jenna P.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 months ago
    A fantastic one piece swimsuit

    I love this suit so much that I may just have to go back and purchase the black one! I'm usually a medium but, because I'm long waisted, went with the large and it fits perfectly.

    Anne N.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 months ago
    Awesome !

    Comfortable and sexy

    Denise M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 months ago
    attractive suit

    This suit is a great one piece with simple design. The blue color (the one we got) is very attractive. We need a smaller size as the suit does not fit snuggly. When it does, I'm sure it will work well for it's needs.

    Karen T.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 months ago
    Makes me happy

    The material is so smooth and soft and gives me support in all the right places. The colour makes me so happy!!

    Wendy W.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 months ago
    Great swimsuit

    Love the fit! It’s hard to get a long torso in a swimsuit any more! I love Knix fabric, so silky smooth!

    Donna S.
    Verified Buyer
    Was this helpful?