Bates Charge with EMX Technology offers a patent pending memory foam heel cup for all day comfort and performance. Agile and stabilizing. Athletic and tenacious. Tested and proven. Durable leather and performance nylon upper Moisture wicking mesh lining to keep your feet dry YKK side zipper for easy on and off Cushioned Removable Insert with odor fighting NXT for added underfoot comfort Molded TPU heel cup for improved stabilization Custom fit contoured memory foam heel to provide you a personalized fit every time Oil and Slip Resistant Rubber Outsole for added traction Strobel/Cement Construction for an athletic, comfortable fit