Features Easy to put on and take off due to the opening frontal design and simple hook and loop fastening straps make this brace suitable for the arthritic or patient who may suffer from limited or weak dexterity Elastic brace with motion hinges provides medial and lateral support for the unstable knee May be used for stabilisation and support of the knee following strains, injury, or surgery Open patella design relieves pressure Hinged Knee Brace Improves healing and keeps joints and muscles flexible Unisex and suitable for Right or Left knee Sizing Guide Measure the circumference of the knee at the patella with knee fully extended. Small 30.5 – 34.3 cm / 12”– 13 ½” Medium 34.3 – 38.1 cm / 13 ½”– 15” Large 38.1 – 41.9 cm / 15”– 16 ½” X Large 41.9 – 45.7 cm / 16 ½”– 18” XX Large 45.7 – 49.5 cm/ 18”– 19 ½”