Description: Three-dimensional weaving technology, high flexibility, good ventilation, wearing a more comfortable fit; Pressure belt design, adjustable, more fit parts; Suitable for a variety of fitness exercises. Prevention or rehabilitation after injury, all kinds of fitness exercise. Full range of flexibility provides a more fit and more comfortable support on the knee. Keeps the knee warm and appropriate, to relieve the pain of chronic arthritis. High elasticity provides a more fit and more comfortable support for the knee. Keep your knees warm and relieve the pain of chronic arthritis. product name: knee pads Color:Black Material: 32% Spandex / 68% Nylon Size(cm): upper circumference/Lower circumference S : 31-33/29-31 Package Included: 1 pcs knee pads