KT by Knix Period-Proof Swim

Teen Underwear Size Chart

KT Period Underwear is designed for smaller and growing bodies to fit teens and tweens

For adult sizes and styles, check out Knix.

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

Find the Perfect Fit

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?

Book a Virtual Fitting with a team member and get 1:1 help over video chat.

Teen Swimwear Size Chart

KT Swimwear is designed for smaller and growing bodies to fit teens and tweens

For adult sizes and styles, check out Knix.

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

Find the Perfect Fit

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?

Book a Virtual Fitting with a team member and get 1:1 help over video chat.

Teen Sweatshirt Size Chart

Still Not Sure What Size To Get?

Book a Virtual Fitting with a team member and get 1:1 help over video chat.