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 One-Piece Swimwear and Leotard Size Chart
KT one-piece swimsuits and leotards are 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
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?

Book a Virtual Fitting with a team member and get 1:1 help over video chat.
Freestyle Leakproof Tights Size Chart
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?

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

Size Charts

Need Help? Book a Virtual Fitting
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.
Shop Underwear
Teen One-Piece Swimwear and Leotard Size Chart
KT one-piece swimsuits and leotards are 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.
Shop Swim
Freestyle Leakproof Tights Size Chart
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?

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