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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
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Home / Shop All Teen / Teen Period Swim Short - Long
KnixTeen

Teen Period Swim Short - Long

$60.00 CAD

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Absorbs about 2 super tampons

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High-rise fit

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Full coverage style

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Premium UPF 50+ fabric

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Machine washable

| Black
| Black
| Black

Absorbency: Moderate
Drop
Drop
Drop
Drop
Drop

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.
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Swim in Style

A longer length short with a 5 1/2" inseam for added protection and maximum coverage.

Worry-Free Protection

Discreet, built-in protection that absorbs about 2 super tampons worth.

Stay Sun-Safe

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

Zoom

| Black
| Black
| 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
LEAKPROOF SWIM WORKS IN LAYERS

Built-in protection that feels like nothing at all.

Looks just like regular swimwear. Non-swelling liner and patented no-show design.

Soft Top Layer

Top Layer

Smooth and comfortable liner in swimsuit fabric.

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4.1
Rated 4.1 out of 5 stars
Based on 8 reviews
Total 5 star reviews: 5 Total 4 star reviews: 1 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 1
75%would recommend these products
ComfortRated 5.0 on a scale of 1 to 5
EffectivenessRated 4.8 on a scale of 1 to 5
Write a Review (Opens in a new window)
8 reviews
  • Rated 5 out of 5 stars
    1 year ago
    Swim freedom

    Really enjoying the fact she can still do lessons and swim team without worrying.

    Ashley Froats W.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    1 year ago
    4 Stars

    Not as long as anticipated but fits perfect

    Ceilidh
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    1 year ago
    Tight

    I meant to order the shorter style. These are super cute but run small!

    Lydia S.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 year ago
    Excellent fit

    Great product, fit well, pockets are great

    Daniela L.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 year ago
    Swim bottoms

    A good fit and nice choice for swim bottoms

    Melanie M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 year ago
    Swim bottoms

    A great fit

    Melanie M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 year ago
    Great option for petite tween

    My small 12yo loves these. She wears them under unlined board shorts for extra confidence.

    She likes that they aren't bulky.

    We're unsure how they will stack up on heavy flow days if she has to get in and out of the pool repeatedly, but they fit well and are comfortable for mid flow days.

    They also easily hang dry overnight in our laundry room, so they're ready to use the next day.

    J. P.
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    1 year ago
    Very thin material

    Material for the short is very thin&see through. When wet you can see the panty liner underneath. The pic on the website is when the short is dry. I don't think they got these shorts wet when they went through trial because if they did, they would not be selling these. I do not recommend this short.

    Cynthia
    Verified Buyer
    Was this helpful?