On the trail, you don't need to know how the firm rubber outsole with trail-specific lug pattern provides exceptional tractionyou just need to know it works. You don't need to know that the Gore-Tex membrane locks out wetness while allowing the moisture vapor you body generates to escape. All you need to know is that The Adidas Men's Terrex Fast X FM GTX Hiking Shoe is how you reach that place you seek when you set out on trail.