Features:1) Non-toxic gel2) Massage your feet when you walk, stand or exercise 3) Fits easily into any type shoes, boots or sneakers4) Excellent shock absorption5) Can be made per customer's demandThis product is made from high quality silicone gel, which have stable formation,long use life, and excellent elasticity.These soft soothing liquid gel filled inner soles are designed to fit easily intoany type of shoe, boot, or sneaker. The gel filled soles gently massage your feet,improving blood circulation, and relaxes your feet as you stand, walk, jog,or exercise.