McDavid Sports 402 Open Patella Knee Support / Brace With Reduced Pressure The McDavid 402 Open Knee Support features an 11& 39;& 39; long thermal Neoprene sleeve that is contoured and darted for best possible fit. The open patella area reduces pressure on the knee cap and improves comfort. It also features nylon facings on both sides, reversible colours and a 4-way stretch. Key Features : Protection level 1 (Primary) Open patella design reduces patella pressure 11" long sleeve 100% latex-free Neoprene that provides thermal therapy and soft tissue support Twin sided nylon construction for increased durability Fits left or right knee Reversible (black to scarlet) Caution: Do not apply over open wounds or if you have a susceptibility to dermatitis. What size do I need? Measure around the middle of the knee. Small = 30-35cm (12-14inches) Medium = 35-38cm (14 -16inches) Large = 38-43cm (15 - 17inches) X-Large = 43-50cm (17-19inches) XX-Large = 50-56cm (19 - 22inches) Colour Black Size S-XXL Model 402