Whew! Finally Free!
This is a fantastic product for athletic teens who don’t want to slow down just because they have their period. Leak proof and reliable, play on and feel free!
No matter your sport, these shorts make sure you do it with confidence, even if it’s channel surfing. Made with the leakproof technology you love, they hold up to 6 pads’ worth of blood, and nobody will ever know you’re on your period, thanks to the discreet built-in liner.
First layer: Moisture-wicking technology wicks away sweat, keeping you fresh all day long.
Second layer: A super thin, highly-absorbent liner that holds the power of 6 tampons or pads.
Third layer: An extra-absorbent layer that keeps leaks from happening.
Key Features:
- Lightweight, 4-way stretch fabric for maximum movement
- A 4” inseam that doesn't’ roll up
- Flattering high-waisted fit
- Wide supportive waistband
- Quick-drying and moisture-wicking
No matter your sport, these shorts make sure you do it with confidence, even if it’s channel surfing. Made with the leakproof technology you love, they hold up to 6 pads’ worth of blood, and nobody will ever know you’re on your period, thanks to the discreet built-in liner.
First layer: Moisture-wicking technology wicks away sweat, keeping you fresh all day long.
Second layer: A super thin, highly-absorbent liner that holds the power of 6 tampons or pads.
Third layer: An extra-absorbent layer that keeps leaks from happening.
Key Features:
- Lightweight, 4-way stretch fabric for maximum movement
- A 4” inseam that doesn't’ roll up
- Flattering high-waisted fit
- Wide supportive waistband
- Quick-drying and moisture-wicking
Machine wash cold with like colors and mild detergent, do not bleach or iron, lay flat to dry.
Body: 70% Nylon, 30% Lycra® Myfit™
Mesh: 62% Nylon 38% Spandex
Lining: 86% Cotton, 10% Spandex, 4% Carbon
Gusset: Fresh Fix Technology®, 88% Polyester, 12% Nylon
Please note, items that are 35% off or less are eligible for exchange or store credit. All items marked "Black Friday Deals" are final sale.
We offer free standard shipping on all orders over $70. 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.
US Orders: Please allow 3–10 business days for orders to arrive.
International Orders: Please allow 10–25 business days for orders to arrive.
NOTE: Orders placed on Friday after 1 PM will not be processed until the following Monday.
CANADIAN CUSTOMERS: Shop www.knixteen.ca to order in Canadian currency.
Both our activewear and underwear feature our patented leakproof technology. There are 3 super thin layers in the gusset (crotch area) that wick away moisture, rapidly absorb blood, sweat & discharge, all while working to lock in leaks. So squat, jump, stretch and move without peek-a-boo tampon strings, bulky pad seams or embarrassing leaks again.
Super Absorbency
Absorbs 9–12 tsp (45–60 ml) of blood—that’s about 9–12 regular tampons or pads! Perfect for overnight protection or your heaviest days when changing into a fresh pair might not be convenient.
High Absorbency
Absorbs 4–8 tsp (20–40 ml) of blood, or the equivalent of 4–8 tampons or pads. These are perfect for heavy flow days.
Medium Absorbency
Absorbs up to 3 tsp (15 ml), or about 3 tampons’ or pads’ worth of blood. Ideal as everyday wear for blood, sweat and discharge, light to medium flow days, or as backup to tampons or period cups.
It’s totally up to you! We have recommendations based on each product, but only you know your flow and comfort levels.
Leakproof Active Legging & Leakproof Active Short - Both have a built-in liner with the holding power of 6 tampons or pads, so they can be used as your only protection or as back up.
Leakproof Leotard & Leakproof Tights - We suggest using them with a tampon or menstrual cup during your cycle’s medium to heavy days. Wear them alone when you have a light flow.
Period Underwear - High and Super absorbency was designed to be worn alone, even on heavy days. Medium absorbency can be worn alone on lighter days or as backup on heavier days.
Step 1: Give your underwear or activewear a quick rinse under cold water.
Step 2: Throw them in the washing machine with your regular clothes. Like-colors for activewear. 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 and activewear, or tumble dry on low for high to super absorbency underwear.
Step 4: That’s it! No ironing needed.
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.
Yes! You can return or exchange within 30 days of delivery, as long as the tags are still attached.
Our collection is made to fit teen bodies. For period-proof activewear in adult sizing, please visit Knix.
This is a fantastic product for athletic teens who don’t want to slow down just because they have their period. Leak proof and reliable, play on and feel free!
The sales ladies got an undergarment for me quickly since I was pressed with time and it fits perfectly. Great customer service and quality is superb!
love how comfortable they are. and gives peace of mind while i'm on my period!
Quality |
Rated 5 out of 5
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Comfort |
Rated 5 out of 5
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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
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Effectiveness |
Rated 5 out of 5
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My Daughter Loves these! She says they are really comfortable and she wears them even when it isn’t her period because she loves them so much.
Quality |
Rated 5 out of 5
|
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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
|
My daughter is a very active and sportive girl and she likes a lot those biker short. It is a game changer for her!!
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
|
KT Size | Hips | Kids Pant Size | Adult Pant Size |
---|---|---|---|
XXS | 25” - 27” | 7 | --- |
XS | 28” - 30” | 8 - 10 | --- |
S | 31” - 34” | 12 - 14 | 00 - 2 |
M | 35” - 38” | 16 - 20 | 4 - 8 |
L | 39” - 42” | --- | 10 - 14 |
XL | 43” - 46” | --- | 16 - 18 |
XXL | 47” - 50” | --- | 20 - 22 |
1. Hips
Stand with your feet together and measure around the widest part of your hips and bottom. Keep the measuring tape parallel to the floor.Still Not Sure What Size To Get?
KT Size | Band | Hips | Kids Pant Size | Adult Pant Size |
---|---|---|---|---|
XXS | 23 3/4" - 25 1/4" | 25” - 27” | 7 | --- |
XS | 25 1/4" - 26 3/4" | 28” - 30” | 8 - 10 | --- |
S | 26 3/4" - 28 1/4" | 31" - 34" | 12 - 14 | 00 - 2 |
M | 28 1/4" - 29 3/4" | 35” - 38" | 16 - 20 | 4 - 8 |
L | 29 3/4" - 31 1/2" | 39” - 42” | --- | 10 - 14 |
XL | 31 1/2" - 33 1/2" | 43” - 46” | --- | 16 - 18 |
XXL | 33 1/2" - 35 1/2" | 47” - 50” | --- | 20 - 22 |
1. Band
First, measure around the torso right below the breast
2. Hips
Stand with your feet together and measure around the widest part of your hips and bottom. Keep the measuring tape parallel to the floor.
Still Not Sure What Size To Get?
KT Size | Hips | Kids Pant Size | Adult Pant Size |
---|---|---|---|
XXS | 25” - 27” | 7 | --- |
XS | 28” - 30” | 8 - 10 | --- |
S | 31” - 34” | 12 - 14 | 00 - 2 |
M | 35” - 38” | 16 - 20 | 4 - 8 |
L | 39” - 42” | --- | 10 - 14 |
XL | 43” - 46” | --- | 16 - 18 |
XXL | 47” - 50” | --- | 20 - 22 |
1. Hips
Stand with your feet together and measure around the widest part of your hips and bottom. Keep the measuring tape parallel to the floor.
Still Not Sure What Size To Get?
KT Size | Band | Hips |
---|---|---|
XS | 28" | 25” - 27” |
S | 30" | 28” - 30” |
M | 32" | 31” - 35” |
L | 34" | 36” - 40” |
XL | 36" | 41” - 44” |
XXL | 38" | 45” - 48” |
1. Band
First, measure around the torso right below the breast
2. Hips
KT Leotards are designed to sit on the hips, so measure around the widest part of the hips and refer to the chart above to find the best fit.
Still Not Sure What Size To Get?
Size | Bust | Hips |
---|---|---|
XS | 27” | 25" - 27" |
S | 30” | 28" - 30" |
M | 34" | 31" - 35" |
L | 37” | 36" - 40" |
XL | 40” | 41" - 44" |
XXL | 40” | 45" - 48" |
Still Not Sure What Size To Get?
Size | Hips | Height | Weight |
---|---|---|---|
XS/S | 25" - 30" | 4'2" - 5'1" | 65 - 100 lbs |
M/L | 31" - 40" | 4'9" - 5'6" | 105 - 130 lbs | XL/XXL | 41" - 48" | 4'11" - 5'6" | 135 - 170 lbs |
Still Not Sure What Size To Get?