McDavid 425 Advanced Ligament Knee Support / Brace Designed For Reduced Pressure The McDavid 425 Ligament Knee Support is designed to reduce the pressure on to the ligaments when bending the knee and aids rehabilitation. Advanced knee support brace featuring a superior horseshoe buttress to support the patella. Two medial and two lateral stays. Two straps and four elastic crossing straps give additional support to the ligaments. Ideal for minor patella or ligament knee injuries and protecting the knee joint in general.Fits right or left knee What size do I need Measure around the middle of the knee. Small = 30-36cm (12-14inches)Medium = 36-38cm (14 -16inches)Large = 38-43cm (15 - 17inches)X-Large = 43-51cm (17-20inches)XX-Large = 51-56cm (20 - 22inches) Colour Black Size S-XXL Model 425R-BK Ligament Knee Support