Inov-8 Women's X-Claw 275 Chill Trail Runner 100% Synthetic Imported Rubber sole For all extreme terrain running, including off-trail conditions encountered on mountains and fells. New X-CLAW outsole features DUAL-C compound (a mix of medium and hard sticky rubbers) for improved durability and stability. Refined claw cleat stud configuration ensures quick release of debris. Increased comfort on long runs: Unique POWERFLOW midsole technology delivers 10% better shock absorption and 15% better energy return than standard midsoles. Wider to box allows toes to splay. Super-durable, yet lightweight, upper material, full rand, toe bumper and internal gusset offer protection on descents and from debris. Water repelled by durable water resistant coating. Does it all: Equally adaptable to training or faster running. Cutaways on the outsole increase flexibility and reduce weight. Dynamic Fascia Band delivers kick of energy with every stride.