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Teen Period Swim Short

$60.00 CAD

Absorbs about 2-3 regular tampons

High-rise fit

Full coverage style

Premium UPF 50+ fabric

Machine washable

Front view of model wearing the Teen Period Swim Short highlighting the coverage and fit
Teen Period Swim Short shown front-facing against a light gray background
Back view of model wearing the Teen Period Swim Short highlighting the coverage and fit
Front view of model wearing the Teen Period Swim Short highlighting the coverage and fit
Close-up of gusset

For this style, we recommend going one size up.

Color: Black

Size:

True to Size

•

Size:

Size and Fit Guide

Free Shipping on orders $125+

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 $125* CAD = Free Shipping (2-6 business days)

Orders under $125* 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

Apparel, Sleep & Swim

Returns & Exchanges

Holiday Return Policy
Eligible items purchased online or in stores between November 2, 2026 and December 31, 2026 may be returned through January 29, 2027. All other purchases fall under our 30 day Returns Policy.

Standard Return Policy
Apparel (excluding Shapewear), sleep and swim are eligible for return or exchange within 30 days of delivery with tags attached. Swim bottoms and one-pieces must have the original sanitary strip intact.

Still have questions? View our full policy here.

Rewards Members Earn 60 Points

Product Description

Stay active and protected with the perfect sporty fit. The Teen Period Swim Short is designed for the teen who wants more coverage and zero compromises. Featuring a built-in leakproof liner that absorbs about 2-3 regular tampons' worth of flow, these shorts offer a secure, stay-put fit for surfing, lake days, or beach volleyball. The shortie-style silhouette provides extra coverage for the hips and upper thighs, ensuring you can move freely without worrying about leaks or shifting. Experience the best period-proof swim shorts for teens and dive into summer with confidence.

Swim in Style

A comfortable high-rise bikini bottom with a wide waistband and maximum bum coverage.

Worry-Free Protection

Discreet, built-in protection that absorbs about 2-3 regular tampons worth.

Sun-Smart Protection

UPF 50+ fabric protects your skin while you soak up the sun.

Zoom

For this style, we recommend going one size up. | Close-up of gusset | General

How to Choose?

Essential

  • • Days you don’t need leak protection. Everyday freshness and moisture wicking.
  • tsp
    0 tsp

Heavy

  • • Extra peace of mind. For the first days of your cycle, light bladder leaks, or a full night's sleep without a leak.
  • tsp
    about 8-14 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 4-7 super tampons
  • cup
    about 1.5-3 menstrual cups

Light

  • • Daily freshness. For sweat, discharge, period spotting, or backup protection.
  • tsp
    about 1-3 tsp
  • pad
    about 1-3 pantyliners
  • tampon
    about 1-3 regular tampons
  • cup
    about 0.5 menstrual cups

Moderate

  • • For mid-cycle flow, surprise cough or sneeze leaks, or a really sweaty spin class.
  • tsp
    about 4-8 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-4 super tampons
  • cup
    about 0.5-3 menstrual cups

Ultra

  • • Ultimate peace of mind. For the heaviest period days, light bladder leaks, unexpected postpartum flow, or overnight protection.
  • tsp
    about 15-20 tsp
  • pad
    about 1.5-2.5 super pads
  • tampon
    about 7-11 super tampons
  • cup
    about 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.

Top Layer

Smooth and comfortable liner in swimsuit fabric.

4.5
Rated 4.5 out of 5 stars
Based on 377 reviews
88%would recommend these products
ComfortRated 4.4 on a scale of 1 to 5
FitRated -0.1 on a scale of minus 2 to 2
EffectivenessRated 4.4 on a scale of 1 to 5
Keywords
Keywords
Rating
Ratings
Height
Height
Usual Teen Pant Size
Usual Teen Pant Size
377 reviews
  • Rated 5 out of 5 stars
    4 days ago
    Very comfy

    My daughter loves it

    VL
    Vicky l.
    Verified Buyer
    Reviewing
    Teen Period Swim Short Shady Blue / S
  • Rated 5 out of 5 stars
    2 weeks ago
    Love the Fabric & Fit

    Fit is great; I got them off-season so I haven't been swimming in them yet but the quality of the fabric is really nice and I love the pattern. Hoping to wear them in the water soon

    KH
    Kali H.
    Verified Buyer
    Reviewing
    Teen Period Swim Short Seabreeze / M
  • Rated 5 out of 5 stars
    2 months ago
    very comfortable

    Fits my daughter well. Looks good, and she finds it comfortable. For reference she is 5'4" and 95 lbs and fit perfectly into size small.

    NS
    Nicole S. Z.
    Verified Buyer
    Reviewing
    Teen Period Swim Short Shady Blue / S
  • Rated 5 out of 5 stars
    3 months ago
    Awesome swim shorts

    I got these last minute before our family vacation for my teen daughter and I’m so glad I did!

    Mothers intuition! I knew she would get her period when we were heading out to vacation! They were perfect!

    Highly recommend!

    MF
    Melanie F.
    Verified Buyer
    Reviewing
    Teen Period Swim Short Black / M
  • Rated 5 out of 5 stars
    3 months ago
    Love them

    My daughter loves these! Makes her confident no leaks when swimming with her period.

    TS
    Tracy S.
    Verified Buyer
    Reviewing
    Teen Period Swim Short Black / L
  • Rated 5 out of 5 stars
    3 months ago
    Perfect protection

    Comfy and stylish. We got multiple to mix and match with tops.

    SS
    sara s.
    Verified Buyer
    Reviewing
    Teen Period Swim Short Black / M
  • Rated 5 out of 5 stars
    3 months ago
    Amazing product

    My daughter recently bought these and she was very satisfied with them. She felt less self conscious when swimming and doing water sports. They were true to size and a good stretch. Thank you also to the kind and helpful staff at the knix store. Thanks again.

    KM
    Krista M.
    Verified Buyer
    Reviewing
    Teen Period Swim Short Shady Blue / S
  • Rated 5 out of 5 stars
    4 months ago
    I enjoyed this item!

    Very good quality just too high on the waist for me personally. Worth it!

    AM
    Angelika M.
    Verified Buyer
    Reviewing
    Teen Period Swim Short Black / XS
  • Rated 5 out of 5 stars
    6 months ago
    Period swim short

    Fit great!

    JG Profile picture for Janet G.facebook logo
    Janet G.
    Verified Buyer
    Reviewing
    Teen Period Swim Short Black / M
  • Rated 5 out of 5 stars
    6 months ago
    Teen swim shorts

    My daughter uses these for swimming when she is on her period and feels so comfortable in them. It’s her favourite swim shorts

    NL
    Niti L.
    Verified Buyer
    Reviewing
    Teen Period Swim Short Black / L
  • Rated 5 out of 5 stars
    9 months ago
    Work great

    These work great for my 14 year old daughter

    DO
    Danielle O.
    Verified Buyer
    Reviewing
    Teen Period Swim Short Black / S
  • Rated 5 out of 5 stars
    9 months ago
    Work great

    These work great for my 14 year old daughter

    DO
    Danielle O.
    Verified Buyer
    Reviewing
    Teen Period Swim Short Black / S