Superior Indoor/outdoor traction and slip resistance from Timberland PRO® rubber convex outsole design. Lightweight Hover Spring™ foam midsole provides industry leading underfoot comfort, flexibility and durability. Fiberglass shank for structural support. Anti-Fatigue Technology polyurethane footbed for shock absorption and energy return. Breathable and moisture-wicking lining with anti-microbial treatment for odor control. Cement construction for flexibility