Inov-8 Women's X-Claw 275-W Trail Runner 100% Textile/Synthetic Imported Rubber sole For all extreme terrain running, including off-trail conditions encountered on mountains and fells New x-claw out stole features dual-c compound for improved durability and stability Refined claw cleat stud configuration ensures quick release of mud and debris Unique Power flow midsole technology delivers 10% better shock absorption and 15% better energy return than standard midsoles Super-durable, yet lightweight, upper material, full rand, toe bumper and internal gusset offer protection on descents and from debris.