Inov-8 Women's Trailroc 235 Trail-Running Shoe 100% synthetic Imported Rubber sole Heel measures approximately 1" This is a super responsive off road animal that will tear up any hard-packed trail Boasting extreme flexibility and proprioception, the 235 is a zero drop shoe with no shank Like all trailroc shoes, it has the Tri-C outsole= a combination of soft stickly, hard sticky and ensurance rubbers, all meticulously positioned to deliver outstanding trail grip Weighs only 8 ounces