GEL + TPU + VELVET Double Cushioning Effect GEL + TPU material which provide more better cushioning effect and comfort, it can absorb shock, reduce stress on feet and good for pain relieve. The surface is velvet, dry and comfortable, suitable for any season. Help Reduce Muscle Fatigue Helps prevent and relieve pain from 3 common sports injuries: shin splints, runner’s knee, plantar fasciitis. High Performance Better cushioning, better shock absorption, giving the best to enhance performance. Customizable Fits work boots/ shoes, casual shoes & sneakers can be easily trimmed and cut. Reduce Foot Odor Breathable features reducing the amount of sweat captured in your shoes.