1.100% highly qualified silicone gel. 2.Providing the proper balance of shock absorption and energy return over the entire plantar surface of the foot. 3.special softer blue dots provide local pressure and pain relief. 4.indication fok knee pain,lower back pain, metatarsal pain, callus pain, arch pain, achillodynia, arthrosis & spinal alteration due to weak and tired feet. 5.Skin-ferendly and hygienic. 6.Ideal for any type of activity sports or daily use . 7.Be washable and reusable. Model: EUNON-K-006 Capacity: 8000-10000pcs/day