adidas Men's Terrex Fast X High Gore-TEX Hiking Shoe other LINING: GORE-TEX Extended Comfort Footwear. INLAY: Molded Ortholite sockliner. MIDSOLE Full forefoot adiPRENE+ for forefoot propulsion & efficiency. MIDSOLE: Outdoor specific FORMOTION unit for enhanced motion control and downhill comfort. OUTSOLE: Continental Rubber for extraordinary grip.