Size Perimeter (inches) Length (inches) Recommended Ankle Circumference (inches)
S (children) 7.1″ 3.9″ 7.9″ - 8.7″
M (Youth) 7.9″ 5.1″ 9.1″ - 9.8″
L (Adult) 8.7″ 5.5″ 10.2″ - 11.0″