Provides support to weak, injured, or arthritic ankle joints. (1) Crossing tension straps for a secure fit. (2) Seamless construction helps prevent irritation. (3) Wrap design and open heel provide a snug fit. (4) Thin, lightweight material for comfortable all-day wear. (5) Fits easily inside most shoes. (6) Antimicrobial (Antimicrobial treatment is intended to protect the brace and does not extend protection to the skin). Sizing: Adjustable, one size fits most, fits left or right ankle. U.S. Shoe Sizes: Fits women's 4.0-14.0 / men’s 3.0-13.0. Not made with natural rubber latex. 3 in 1 (1) Reduces inversion-eversion motion in the ankle. (2) Supports ankle throughout workout. (3) Helps protect against ankle injury. Curt Mueller. Since 1959 the Mueller family has been the trusted leader in sports medicine. We are dedicated to creating the highest quality products that help people recover and perform at their peak. Engineered in Wisconsin by Mueller Sports Medicine. Trusted brand. Family owned since 1959. One Size. Class 1 medical device. FSA eligible.