Combination air and foam bladders can be inflated and deflated for desired level of compression. Foot strap adjusts to accommodate many widths. Hookandloop straps for secure application. Fits right or left ankle. Small measures 83/4" H (22.2 cm); Trainer measures 91/2" H (24.1 cm)ORT27200. 27200. Medline Medline Air and Foam Stirrup Ankle Splints,White,Universal.