material: Elastic polyester fabric, good perspiration, comfortable and breathable. Good elasticity, good abrasion resistance, effective wrapped calf muscle, and keep the skin dry. Size: L:29CM Anti-collision design and silicone anti-slip design: The foam is full of elasticity and can quickly restore the original shape. Effectively protect the calf from injury. The service life is very long. And the silicone anti-slip design prevents falling off. Protective effects: People who suffer from the following ailments or want to guard against them. Nagging calf injuries,Cramping, shin splints, calf strains, Achilles tendon pain,arthritis, tendonitis, stiffness, sore muscles, surgery recovery and more Our supports are designed to keep you moving. Used by sports men and women globally, we keep people in the game. Ideal for football, running, tennis, squash, the gym, hockey, exercise. walking, lifting and more. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.