adidas outdoor Terrex Fast X GTX Hiking Shoe - Men's Base Green/Black/Semi Solar Yellow 9 Mesh GORE-TEX membrane provides waterproof breathability Tongue and heel pull loop for an easier on and off Molded foam insole supplies light underfoot cushioning Outdoor-specific FORMOTION midsole unit for enhanced motion control and downhill comfort Full-forefoot adiPRENE+ promotes forefoot propulsion and efficiency