Material: PU Popcorn Color: as shown in the picture Size: A size that can be tailored to the size of your shoe, You can cut the insole to the right size for you Condition: 100% brand new Function: Height Increasing, soft, comfortable, breathable, shock absorption, deodorant Package content: a pair Explanation: Thermoplastic polyurethane foamed beads. The popcorn sole is a new type of polymer material made up of countless flexible but light weight ETPUs. ETPU popcorn is a new type of soft foaming material. It uses supercritical fluid foaming agent and adopts a preparation process similar to popcorn to expand the volume of TPU particles by 5-10 times in a very short time.very soft and comfortable