Helps support sore, weak and arthritic ankles. Firm strapping system; crossing tension straps for a secure fit. Thin, lightweight material for comfortable all-day wear. Seamless design helps prevent irritation. Wrap design and open heel provides a snug fit. Fits easily inside most shoes. Antimicrobial.* Adjustable - one size fits left or right. U.S. shoe sizes: Women's 4.0-14.0, men's 3.0-13.0. Moderate support. Not made with natural rubber latex. *Antimicrobial treatment is intended to protect the brace and does not extend protection to the skin.