Happystep shoe inserts’ top is made of fine and smooth velvet which delivers softness and coziness to the skin of your feet; the bottom sole is made of premium quality and high-density memory PU which uses the heat from your feet to soften and mold to your unique feet sole shape, and to provide customized support and comfort..Happystep full-length memory foam insoles provide orthopedic cushioned arch support and heel-to-toe cushioning while standing or in motion. They are ideal insoles for those who have foot problems like plantar fasciitis, flat feet, rigid steps, and high, weak, or fallen arches..Happystep memory foam insoles are designed as everyday-use shoe inserts that help with foot fatigue and relieve foot pain. They are best fit in footwear with removable insoles. It is recommended not to insert both the new insoles and the old insoles into the shoes as they would take too much room from your footwear. Your feet may feel too tight in the shoes..Cut to your own size: please follow the sizing instruction on the insoles package to trim your insoles for the best fit..100% Customer Satisfaction Guaranteed! All Happystep Insoles are backed by our 30-day money-back guarantee. If the insoles do not work for you, please let us know. We will issue you a full refund.