LEVEL ONE PRIMARY PROTECTION: Best for minor support helping to relieve pain and promote healing of tendonitis, bursitis, arthritis and other non-specific knee conditions Features & Benefits Open knee design for added comfort around the patella• Exclusive 5-needle stitch for a flatter, cleaner and stronger seam Seamless back-of-knee and anatomical design for added comfort• Latex-free neoprene provides thermal/compression therapy• Outer heavy-duty nylon fabric for durability• Fits left or right -Level One 100% latex-free 3.2mm neoprene (CR)—exclusive of binding/cover fabric SIZING: KNEE Measure the knee to be protected (you likely figured that). Stand and bend your leg just less than 45 degrees, measure around the largest part of knee, directly over the patella (kneecap). XS 12-14"/30 cm S 12-14"/30-36 cm M 14-15"/36-38 cm L 15-17"/38-43 cm XL 17-20"/43-51 cm XXL 20-22"/51-56 cm