Body: 85% Nylon, 15% Spandex
Fabric is seawater and chlorine resistant and has 50+ SPF protection.
Machine-wash cold, lay flat to dry. Do not bleach.
Eligible for a return or exchange within 30 days of delivery with original tags attached.
We ship our items via DHL, or Canada Post depending on your location. Please allow 1-2 business days for your order to dispatch.
For orders to Canada 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.
For orders to the US please allow 3-10 business days for orders to arrive.
For international orders please allow 10-25 business days.
NOTE: orders placed on Friday after 1 pm will not be processed until the following Monday.
Please see our Shipping page for more info.
All of our swimsuits have the same patented, 3-layer leakproof technology as our underwear plus an additional thin layer of waterproof material for extra protection. Here’s the breakdown.
First layer: Moisture-wicking, antimicrobial technology wicks away sweat and moisture while neutralizing odors to keep you fresh all day long.
Second layer: A super thin, highly-absorbent liner that holds the power of 3 tampons.
Third layer: A secure, liquid-resistant outer layer keeps leaks from happening.
Fourth layer: Another thin layer of waterproof material for extra protection.
KT Swimwear has a super discreet absorbent pad in the gusset liner that absorbs up to 3 tsps of blood, which equals about 3 tampons or pads.
Not always. When your flow is light, KT Swimwear can be worn alone without any additional period protection. On super heavy days, the swimwear works great as backup protection with a tampon or menstrual cup. Every period is different though, and we recommend doing whatever makes you feel most confident.
The layers in the gusset of the underwear work to trap and absorb blood. We want you to feel 100% confident in your KT Swimwear, so if it is a super heavy flow day, we suggest wearing a tampon or menstrual cup with your suit.
Just machine-wash cold and lay flat to dry. Do not bleach.
Definitely. KT Swimwear is seawater and chlorine resistant, and has 50+ SPF protection!
If you’re not sure which size underwear to get, just book a Virtual Fitting and someone from the Knix team will video chat you to walk you through everything!
Yes. All KT Period-Proof Swim Bottoms and One-pieces are eligible for a return or exchange within 30 days of delivery and with original sanitary strip and tags attached. KT Period-Proof Swim Tops are eligible for a return or exchange within 30 days of delivery with original tags attached.
Absolutely. KT Swimwear looks and feels just like regular swimwear with a barely-there, leakproof liner.
Our styles are made to fit teen bodies. For Period-Proof Underwear in adult sizes, please visit Knix.com.
| 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
|
I love this top for my daughter because it's comfy and cute, but not too much cleavage. It's great for her school trips and swimming lessons!
Ok, this top is amazing! So simple, yet so cute! I love it with the high-rise bottoms!
Fits get well, true to size, and is secure enough to swim and play in!
| Quality |
Rated 5 out of 5
|
|---|---|
| Comfort |
Rated 5 out of 5
|
| Effectiveness |
Rated 5 out of 5
|
| Sizing |
Rated -1 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
|
From the measurements, we ordered a small but the band was much too tight. Switched it for a medium and it's much better. She loves the modesty! Seems to be high quality.
| Quality |
Rated 5 out of 5
|
|---|---|
| Comfort |
Rated 5 out of 5
|
| Effectiveness |
Rated 5 out of 5
|
| Sizing |
Rated -1 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
|
Size up if you have a bigger chest
| Quality |
Rated 5 out of 5
|
|---|---|
| Comfort |
Rated 5 out of 5
|
| Effectiveness |
Rated 4 out of 5
|
| Sizing |
Rated -1 on a scale of minus 2 to 2, where minus 2 is Fits Small, 0 is True to Size and 2 is Fits Large
|
| KT Size |
Hips | Kids Pant Size (Ages 7-13) |
Teen Pant Size (Ages 14+) |
|---|---|---|---|
| XS | 25” - 27” | 7 | --- |
| S | 28” - 30” | 8-10 | --- |
| M | 31” - 35” | 12-14 | 00-2 |
| L | 36” - 40” | 16-20 | 4-10 |
| XL | 41” - 44” | --- | 12-16 |
| XXL | 45” - 48” | --- | 18-20 |
1. Hips
KT Underwear is 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?
| KT Size |
Band | Hips | Kids Pant Size (Ages 7-13) |
Teen Pant Size (Ages 14+) |
|---|---|---|---|---|
| XS | 28" | 25” - 27” | 7 | --- |
| S | 30" | 28” - 30” | 8-10 | --- |
| M | 32" | 31” - 35” | 12-14 | 00-2 |
| L | 34" | 36” - 40” | 16-20 | 4-10 |
| XL | 36" | 41” - 44” | --- | 12-16 |
| XXL | 38" | 45” - 48” | --- | 18-20 |
1. Band
First, measure around the torso right below the breast
2. Hips
KT Underwear is 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?
