Contoured 3 piece design provides a comfortable fit.... Ideal for minor tendon and ligament injuries, sprains and twists.... Light and comfortable so does not restrict movement.... 3mm Thick... Measure around mid-section of the knee while in a standing position.... XS=26-30cm... S=30-35cm... M=35-40cm... L=40-45cm... XL=45-50cm... ...Products in the Vulkan support range are of slightly higher quality than in the LP support range, hence the difference in price…