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 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
Find the Perfect Fit

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?

Book a Virtual Fitting with a team member and get 1:1 help over video chat.
Teen Swimwear Size Chart
KT swimsuits 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 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
Find the Perfect Fit

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?

Book a Virtual Fitting with a team member and get 1:1 help over video chat.
Teen Leotard Size Chart
KT 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
XS 28" 25” - 27”
S 30" 28” - 30”
M 32" 31” - 35”
L 34" 36” - 40”
XL 36" 41” - 44”
XXL 38" 45” - 48”
Find the Perfect Fit

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?

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

We updated our sizes to better suit teens. Our new sizes are built based on the unique proportions and feedback of numerous teens ages 11 to 18. The end result? An even more size-inclusive range that gives teens everywhere the fit they deserve.

Our new sizes go into effect Jan. 11, 2022. Take a look at our new size chart below to find your perfect fit or 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 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
Find the Perfect Fit

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?

Book a Virtual Fitting with a team member and get 1:1 help over video chat.
Shop Underwear
Teen Swimwear Size Chart
KT swimsuits 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 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
Find the Perfect Fit

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?

Book a Virtual Fitting with a team member and get 1:1 help over video chat.
Shop Swim
Teen Leotard Size Chart
KT 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
XS 28" 25” - 27”
S 30" 28” - 30”
M 32" 31” - 35”
L 34" 36” - 40”
XL 36" 41” - 44”
XXL 38" 45” - 48”
Find the Perfect Fit

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?

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