Due to the closed-lace design of this shoe, men with a high instep or a slightly fuller width foot may consider sizing up 1/2 size. A Flex welt and laser-perforated leather support unrestricted movement and flexibility. Dynamic energy foam is designed to comfort and propel each part of the foot, and rivals top-of-the-line running shoes. Zonal tongue and Achilles padding generates ready-to-wear comfort from day one. Anatomically contoured energy foam footbed cushions as it supports weight distribution and moisture control. Comfort Fitsock embraces and cradles the foot from the first instant. Full rubber outsole provides mobility, durability, and reliable grip for any terrain. Grand.OS technology.