Material: 65% Neoprene + 30% Polyester + 5% nylon - Suitable for knee circumference of 31-45cm - Applicable: Knee pain and discomfort mild strain / sprain knee fatigue patellar instability fitness sports and so on. - Adopt silicone elastic bandage design to provide local pressure and non-slip effect - Allergen free and antislip it is very comfort to use - Ergonomic design of 4 springs perfect support effect - Open knee brace protector - Adjustable and durable - EVA gasket design very comfortable - Adopt imported Velcro from Taiwan edge with soft mesh fabric more durable