Knee Support Standard X Small 11.25 12.5 Smith Nephew Tapes adjusts to 90 degrees * 10 LL 100 adjusts to 90 degrees * Easy on off * Measure from Wrist To Elbow Crease * 5 Distance between Armrests: 23 X Small * Fits knee circum 5 (measurement taken just under the knee cap while knee is slightly bent) * Thermal support for prevention treatment & rehabilitation of the knee * Provides protection and support against general wear and tear including sprains strains and twisted knees * Anatomically shaped in 3 pieces for more comfort and a better fit * Thermoskin increases elasticity of muscles tendons and ligaments to reduce the risk of injury when under stress and strain * Clinically proven to increase surface skin and subcutaneous temperature between 2 3 degrees F the optimal level to make tendons and muscles more pliable and elastic to provide optimal muscle function