Supreme Stabilizer is indicated for use with soft tissue injuries, severe sprains of the ankle, stable lower extremity fractures, and as part of a rehabilitation regimen. The padding conforms to your anatomy to give an exceptionally comfortable fit. The lightweight design, rocker sole, and padding work together to give a comfortable, natural gait during the healing and rehabilitation processes. Universally designed to fit the right and left leg.XSmall: Men"s Shoe Size: 2 - 4,Women"s Shoe Size: 3 - 5; Small: Men"s Shoe Size: 4.5 - 6, Women"s Shoe Size: 5.5 - 7; Medium: Men"s Shoe Size: 6.5 - 10, Women"s Shoe Size: 7.5 - 11; Large: Men"s Shoe Size: 10.5 - 12, Women"s Shoe Size: 11.5 - 13; XLarge: Men"s Shoe Size: 12 + , Women"s Shoe Size:13+