Features of the Adidas Men's Terrex Fast GTX Surround Shoe Upper: Speed lacing construction for fast and snug lacing Abrasion resistant weldings for protection Sockliner: Molded Ortholite sockliner GTX-Surround: Ventilation through Midsole sidewall with closed Outsole and 30re-texa extended comfort footwear for enhanced breathability and 360 degree climate comfort without compromising on waterproof protection Outsole: Continental Rubber for extraordinary grip