Soccer Shin Guard Sizing

 XXSXSSMLXL
GenericUp to 3'3"3'4" - 3'11"4'0" - 4'7"4'8" - 5'3"5'4" - 5'11"6'0" +
adidasUp to 3'0"3'1" - 3'11"4'0" - 4'7"4'8" - 5'3"5'4" - 5'11"6'0" - 6'3"
Diadora2'7" - 3'3"3'4" - 3'11"4'0" - 4'7"4'8" - 5'3"5'4" - 5'11"6'0" - 6'7"
Nike (Senior) 4'7" - 4'11"5'0" - 5'3"5'4" - 5'7"5'8" - 5'11"6'0" - 6'3"
Nike (Junior)  3'4" - 3'8"3'9" - 4'3"4'4" - 4'8" 
Pro Touch3'3"3'9"4'6"5'2"5'9"6'5"
Under ArmourUp to 3'0"3'1" - 3'11"4'0" - 4'7"4'8" - 5'3"5'4" - 5'11"6'0" - 6'3"

Shin guards become longer and wider as they go up in size, to accommodate larger legs.

Your shin guards should leave enough room above the ankle for you to fully flex your foot upward; the top of the shin guard should sit about two to three inches below the knee.