Advanced 3-D contoured knee support gives the knee joint compression. Provides support and warmth. Relieves pressure and improves co-ordination. IPF & IWF Legal for Raw and Open Competition. Used extensively by Crossfit, Strongman, Powerlifting, and Olympic Weightlifting athletes. If tight competition fit is desired, order one size smaller than the Rehband recommended size chart. <br> <br> <b>For correct sizing measure around your lower leg 15cm below the patella with the knee joint flexed 30 degrees.</b> <br> <br> Pink and Purple colors are 7751W Rx (women's) supports. Women's supports are approximately one inch shorter than 7751 Rx unisex supports and are sized slightly smaller: <br> X-Small (30-32cm) <br> Small (32-34cm) <br> Medium (34-36cm) <br> Large (36-38cm) <br> X-Large (38+ cm) <br> <br> All other colors are 7751 or 7751 Rx (unisex) supports: <br> X-Small (31-33cm) <br> Small (33-35cm) <br> Medium (35-37cm) <br> Large (37-40cm) <br> X-Large (40-43cm) <br> XX-Large (43+cm) <br> <br> <b>Sold as a pair - bundled with GHP Backpack.</b>