adidas outdoor Women's Response Purple Sneakers 8.5 M Synthetic GORE-TEX Lining - A waterproof an breathable material Synthetic Materials and Overlays - Provide a comfortable and breathable trail running shoe Eyelet - Designed to work with the synthetic overlays to help provide you with a secure sung fit Tongue And Lace Loop - An adaptive material that has been specially designed to help guide sweat away from the foot Heel Counter - Provides for stability within the shoe whilst you run