Design: Abrasion resistant mesh for protection and durability GORE-TEX(R) Performance Comfort membrane for breathable waterproof protection Seamless overlays provide abrasion resistance and protection External heel clip provides heel support for lateral stability In-Shoe Comfort: Boost(TM) offers long lasting cushioning, energy return and high adaptability on rocky surfaces EVA stabilization frame adds lateral stability and mid-foot support Durability & Traction: Continental(TM) Rubber outsole provides extraordinary traction in wet and dry conditions Additional Details: Best for: Hiking, trekking