1Antislip design, microparticle silica gel to prevent slip, antiallergy design. 2Can effectively prevent the allergy caused by the fabric. Comfortable wearing experience. 3Contractive muscle flap, repair vein valve, promote blood flowing, light pressure. 4Comfortable ventilation, lift and tension, sequential decompression, elastic bundle, no tension. 5Helps to repair venous reflux, keep away from varicose veins, and improve the supporting effect.