Hi-Tec Men's Alto Waterproof Outdoor Walking Shoe Textile Mesh Upper - Allows air to permeate the shoe and thereby encourage a comfortable, fresh environment. Dri-Tec Membrane - Lends the shoe a fully waterproof quality, keeping the foot protected from wet terrain. Ghillie Lacing System - Enables the wearer to tighten the shoe's fit quickly and with ease. CMEVA Footbed - Removable and pliable enough to conform to the wearer's foot, this contoured sockliner provides a comfortable, adaptive fit and supplements the shoe's primary cushioning unit. Injection Moulded EVA Midsole Compound - Cushions the foot and attenuates shockwaves superbly.