Nike Mens Free RN Distance Running Shoe Midnight Turq/Off White/Teal 13 fabric-and-synthetic Flywire Rubber sole Zoom Air located in the forefoot consists of low-profile pressurized air pockets that flex on contact for responsive cushioning Cushlon is a full-length midsole foam that delivers plush, resilient cushioning Phylon Wedge is a midsole foam piece in the heel for lightweight, resilient cushioning