Size runs accurately. The heel cup fits snugly, while the mid-foot is sculpted and the forefoot and toe box are both wider. Our men's standard width is C in the heel and D in the forefoot (according to Brannock Device®), but fit may vary depending on the materials and design of the model. Our Standard Volume accommodates medium-high volume feet with higher arches and insteps. The upper material is Leather Working Group Gold Certified Oiled Nubuck Leather, with 30% recycled polyester mesh, a TPU heel counter, and a B-DRY waterproof membrane. The laces and webbing are both made from 100% recycled polyester, and the window is micro-injected PU.