Good product, good choice The knee brace is with ergonomic design, which makes it comfortable to wear. The knee brace has the function of pain relief, it is effective to protect knee. Made of nylon material, it is reusable and washable There are different sizes of the product to choose from. It is suitable for basketball and running. Item Name: Knee Brace Material:Nylon Size Details: [Our Size S] Length: 27cm/10.63", Upper Width: 15cm/5.91", Bottom Width: 13cm/5.12", Fit Calf Girth: 30cm - 34cm/11.81" - 13.39" (Approx.) [Our Size M] Length: 27cm/10.63", Upper Width: 16cm/6.30", Bottom Width: 14cm/5.51", Fit Calf Girth: 35cm - 41cm/13.78" - 16.14" (Approx.) [Our Size L] Length: 27cm/10.63", Upper Width: 17cm/6.69", Bottom Width: 15cm/5.91", Fit Calf Girth: 42cm - 47cm/16.54" - 18.50" (Approx.) [Our Size XL] Length: 27cm/10.63", Upper Width: 18cm/7.09", Bottom Width: 16cm/6.30", Fit Calf Girth: 48cm - 55cm/18.90" - 21.65" (Approx.) Notes: -We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. -All dimensions are measured by hand, Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm). -The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding. Package Includes: 1 X Knee Brace