Gore-Tex waterproof membrane. Exceptional breathability and waterproof performance combined with a breathable mesh and TPU upper 100% recycled laces, webbing, breathable mesh lining and footbed cover Bellows tongue keeps dirt out, while the abrasion-resistant rubber toe cap provides extra protection FloatPro foam midsole for lightweight comfort that lasts, and a rock plate for added protection Vibram TC5 outsole technology gives you confidence in every step from mountain paths to city roads. Made exclusively for Merrell, Vibram TC5 provides all-round grip, traction and durability for everyday use