Mueller Sports Medicine Adjustable Hinged Knee Brace, Black/Gray, One Size Fits Most

INTENDED USE: Provides support to weak, injured, or arthritic joints; helps prevent medio-lateral movement and hyperextension of the knee
FIT: One size fits most. Can be worn on the right or left. Self-adjusting tension straps help provide ideal compression and support for all sizes.
GEARED HINGES: Hinges help control against unwanted motion by keeping the leg moving in proper motion (one on each side)