The Rocket X, as its name suggests, is a super shoe that shines during races and tempo runs. It has a cushioned but efficient ride due to its just-right EVA midsole and its unobtrusive carbon fiber plate. For runners who have never run in a carbon fiber shoe before, the Rocket X is the perfect shoe to make the transition in because form doesn’t matter as much as with other carbon plated shoes and it is incredibly forgiving. (Running Shoes Guru) Brand Rocket X Model Racing Type 7.4 oz. (210 gr.)Weight 179.95 US$MSRP 5 mm Heel Drop These shoes are in good shape and have plenty of miles left. Smoke and pet free environment. Prompt and secure shipping in USPS Ground Advantage shipping box.