Solely high quality silicone gel can providing the proper balance of shock absorption and energy return over the entire Plantar surface of feet can provide local pressure and pain relief functions; Indication for knee pain, lower back pain, metatarsal pain, callus pain, arch pain, chillodynia, arthrosis and spinal alteration due to weak and tired feet Skin-friendly and hygienic , Ideal for any types of activities, sports or daily use can be made as per customer’s demand in any style Washable and reusable after in shape. f