Light Leakproof No-Show Underwear Boyshort

Name: Light Leakproof No-Show Underwear Boyshort
Brand: Knixteen Canada
SKU: KT117BXXS
Price: 18.7 CAD
Availability: InStock
Rating: 4.7 (998 reviews)

made for doing everything or nothing on your period. your pick.

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Quick Facts

Each pair holds the same as about 1 regular tampons worth of blood, sweat or discharge.

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Rapidly absorbs moisture to keep you fresh and dry all day.

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Thin, subtle, and designed to feel just like regular underwear.

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Simply care with mild detergent and machine wash on cold.

Details

These period undies protect teens against leaks, sweat, and discharge. A classic silhouette made from soft, stretchy, quick-drying fabric with a thin liner that absorbs the same as about 1 regular tampon. Wear them as everyday underwear, as full protection on light days, or backup on heavy days.

Key Features:

- Quick-Drying

- Moisture and Sweat Wicking

- Absorbs the same as about 1 regular pantyliner/tampon

- Super soft & stretchy

- Invisible under leggings or shorts (aka no visible seam lines)

- Patented leakproof technology

Kt period underwear and pads are now sales tax-free in Canada.* We celebrate improvements to the accessibility and affordability of essential period care products. Learn More.

Fabric & Care

Body: 77% Nylon, 23% Xtra Life Lycra

Lining: 86% Cotton, 10% Spandex, 4% Carbon

Gusset: Fresh Fix Technology®

Machine wash cold with mild detergent, do not bleach, lay flat to dry.

Returns & Exchanges

For items with a 20% or more discount, you may exchange for another item or return for store credit. No refunds can be accommodated.

Items marked as “Flash Sale” or “Clearance” are final sale, meaning no returns, exchanges or refunds can be accommodated. No exceptions.

Please note: Sale items are not eligible for our First Pair Risk-Free Policy.

Shipping Info

We offer free standard shipping on all orders over $80.

We ship our items via DHL or Canada Post depending on your location. Please allow 1-2 business days for your items to be processed and shipped. During high volume periods, your order may take up to 7 business days to dispatch from our warehouse location.

Canadian Orders: Please allow 2–4 business days for shipping to the GTA, 3–10 business days for urban areas, and 6–15 business days for remote locations.

NOTE: Orders placed on Friday after 1 PM will not be processed until the following Monday.

FOR THE PLANET

FOR REAL LIFE

FOR THIS GENERATION

FOR THE PLANET

FOR REAL LIFE

FOR THIS GENERATION

FOR THE PLANET

FOR REAL LIFE

FOR THIS GENERATION

FOR THE PLANET

FOR REAL LIFE

FOR THIS GENERATION

FOR THE PLANET

FOR REAL LIFE

FOR THIS GENERATION

FOR THE PLANET

FOR REAL LIFE

FOR THIS GENERATION

FOR THE PLANET

FOR REAL LIFE

FOR THIS GENERATION

FOR THE PLANET

FOR REAL LIFE

FOR THIS GENERATION

FOR THE PLANET

FOR REAL LIFE

FOR THIS GENERATION

FOR THE PLANET

FOR REAL LIFE

FOR THIS GENERATION

FOR THE PLANET

FOR REAL LIFE

nothing is tmi here—we promise.

Are leakproof products tax-free?

Period underwear and pads are exempt from federal sales tax in Canada. They are also exempt from most provincial / harmonized sales taxes. But are subject to the following provincial sales tax rates which will apply to orders shipped to the following provinces and to orders purchased in retail stores located in the following provinces: British Columbia and Manitoba: 7% PST; Saskatchewan: 6% PST.

Need more info? Click here

How does period underwear work?

Each pair has a built-in liner that absorbs period blood. Kt Period Underwear is categorized by lightest, medium and heavy flows so you can find the right pair for your teen’s needs.

What do the different underwear absorbency levels mean?

Heavy Absorbency

Absorbs about the same as 3 super tampons. Perfect for overnight protection or your teens heaviest days when changing into a fresh pair might not be convenient.

Medium Absorbency

Absorbs about 2.5 super tampons' worth of blood. Ideal for medium period days, discharge and sweat.

Lightest Absorbency

Absorbs about the same as about 1 regular tampon worth of blood, sweat or discharge. Ideal for lightest period days, spotting, sweat and discharge.

How does period underwear work?

All of our period underwear, swimwear, reusable pads, and activewear have our patented leakproof technology built right in. Liner’s are discreet and comfortable, and fit for your teen’s unique flow.

Does my teen need to wear a pad or tampon with period underwear?

That’s up to your teen or tween! Every flow and comfort level is different.

Depending on the absorbency level of the period underwear and the heaviness of your teen’s flow, they can wear our period undies on their own or as a backup to tampons or menstrual cups.

We always recommend they choose an option that makes them feel most confident!

How do I wash them?

Step 1: Give your teens underwear a quick rinse under cold water.

Step 2: Throw it in the washing machine with your regular clothes. Wash on cold with mild detergent (no softener or bleach).

Step 3: There are two ways to dry them depending on the undies you have: lay flat to dry for medium absorbency products, or tumble dry on low for high to super absorbency products.

Step 4: That’s it! No ironing needed.

What size should I get?

Check out our size chart here. If you want some help, we have virtual fitters ready on deck to help you find your perfect fit. Book a video call with them today.

Can I return my period underwear?

Because they’re, well, underwear, we can’t accept exchanges or returns on used items. BUT you can try your first pair on your first order risk-free for 30 days!

If you ordered the wrong size of period underwear, we’ll send you a different pair at no cost or offer you a standard refund within 30 days of delivery (excluding original shipping fees).

If your order included multiple period underwear, open, wash, and wear one pair only. That way if you don’t love them, any unopened packages from the same purchase will be eligible for an exchange or standard refund (excluding original shipping fees).

All unopened packages will be donated to local organizations to support people in need.

COMFORTABLE

ABSORBENT

JUST PLAIN BETTER

REUSABLE

COMFORTABLE

ABSORBENT

JUST PLAIN BETTER

REUSABLE

COMFORTABLE

ABSORBENT

JUST PLAIN BETTER

REUSABLE

COMFORTABLE

ABSORBENT

JUST PLAIN BETTER

REUSABLE

COMFORTABLE

ABSORBENT

JUST PLAIN BETTER

REUSABLE

COMFORTABLE

ABSORBENT

JUST PLAIN BETTER

REUSABLE

COMFORTABLE

ABSORBENT

JUST PLAIN BETTER

REUSABLE

COMFORTABLE

ABSORBENT

JUST PLAIN BETTER

REUSABLE

Reviews

average rating 4.7 out of 5

Based on 998 reviews

5 Stars

803 Reviews
4 Stars

141 Reviews
3 Stars

32 Reviews
2 Stars

8 Reviews
1 Star

14 Reviews

95% of reviewers would recommend this product to a friend

Quality	Rated 4 out of 5
Comfort	Rated 4 out of 5
Sizing	Rated 0 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
Effectiveness	Rated 4 out of 5
Fit	Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large

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Review posted

Reviewed by Sarah B.

Verified Buyer

Reviewing

Light Leakproof No-Show Underwear Boyshort

Pant Size

Teen 18-20

Size Purchased

Usage

Primary Protection

Rated 5 out of 5

Great for Moms too!

I got on KT to buy for my tween and thought I'd try a couple pairs myself so I could explain to her how it works. The protection in these is plenty for my perimenopausal cycles these days. (Actual pant size 8-10 curvy adult,)

I recommend this product

Quality	Rated 5 out of 5
Comfort	Rated 5 out of 5
Sizing	Rated 0 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
Effectiveness	Rated 5 out of 5
Fit	Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large

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Review posted

Reviewed by C G.

Verified Buyer

Reviewing

(closed) Light Leakproof No-Show Underwear Boyshort

I'm a...

Adult

I purchased for...

Myself

Pant Size

Teen 12-16

Size Purchased

Usage

Back-up Protection

Rated 5 out of 5

Extreme comfort

This was my first pair of Knix underwear and when trying them on for the first time, the fit was perfect and the comfort level was amazing!

I recommend this product

Quality	Rated 5 out of 5
Comfort	Rated 5 out of 5
Sizing	Rated 0 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
Effectiveness	Rated 4 out of 5

Was this helpful?

Review posted

Reviewed by Kathryn F.

Verified Buyer

Reviewing

Light Leakproof No-Show Underwear Boyshort

Pant Size

Teen 00-2

Size Purchased

Usage

Period
Primary Protection

Rated 5 out of 5

These feel like normal umderwear

Great product! Better than others we have tried!

I recommend this product

Quality	Rated 5 out of 5
Comfort	Rated 5 out of 5
Sizing	Rated 0 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
Effectiveness	Rated 5 out of 5
Fit	Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large

Was this helpful?

Review posted

Reviewed by Suzanne D.

Verified Buyer

Reviewing

Light Leakproof No-Show Underwear Boyshort

I'm a...

Adult

I purchased for...

A Teenager/Tween

Pant Size

Kids 12-14

Size Purchased

Usage

Back-up Protection

Rated 5 out of 5