IVI three dimensional carpets are designed to stimulate and encourage children's play in a creative, entertaining and interactive way with room for friends to join in! No batteries required. These unique carpets are designed by a Turkish architect and mother of two and were developed to promote independent thinking and a traditional process of play through discovery. IVI is committed to producing the healthiest carpets on the market for your child. After several tests in approved international laboratories, IVI received the European Child Protection Standards approval for mechanical and physical endurance and the absence of toxic substances. Carpets are 100% polypropylene, hypo-allergenic, anti-static, stain resistant and made from non-flammable material.