Item Type: Knee WarmersMaterial: Cotton Yarn Graphene, Nylon, Latex Silk, Polyurethane Fiber, Stainless Steel, SiliconeColor: As Pictures ShownLength: Approx. 30cm / 11.8in 1Graphene Fibers Material: The graphene fibers are dispersed in the yarn, and the structure can reflect the heat of the human body, and can transfer the heat energy to the skin of the human body to lock the heat of the knee. 2Silicone Ring and Spring: Built in silicone ring to protect the knees, shock absorption protection, safe and secure. Double fish scale spring support, exercise effortless and rest assured. 3Breathable and Sweat Absorbing: Breathable knitted fabric can immediately absorb and evaporate a large amount of water, rebreathing. Breathable, quick drying, sweat absorbing and light. 4Thicken Design: Thicker than other knee pads and provide extra reinforcement without compromising comfort, so you can wear them all day long. Universal for men and women, Please refer to our size chart to selection. 5Wide Applications: Medical grade knee pads are suitable for meniscus tears, arthritis, ACL, joint pain relief, and sports injury recovery. Widely used in many sports, such as weightlifting, basketball, running, jogging, volleyball, gym, tennis, hiking, etc.