Extra Wide Last " We built a new true wide last with significant volume added " notably in the ball, waist, and instep. This provides the extra room inside of the shoe allowing for accommodating fit and easy entry BOOTIE CONSTRUCTION " Bootie construction provides step in comfort and 360-degrees of support around the foot PWRStrap Fit System " Advanced nylon webbing straps integrated with the lacing system that wrap the foot to provide a secure, personalized fit SOFTFOAM " Dual-density insole provides two unique layers of cushioning for customized comfort, fit and long-lasting durability FUSIONFOAM " Mix of super soft EVA foam and ultra-responsive rubber combine to provide unrivaled energy return and cushioning to keep you comfortable all-day long