Merrell Azura Gore-TEX Women's Walking Shoes - AW16 Textile Nubuck/Suede/Mesh Upper - Each material lends the shoe a distinct, individual quality, with the nubuck offering a premium finish, the suede a durable resistance to water and the mesh an inherently breathable quality. GORE-TEX Performance Comfort Footwear Lining - Sits beneath the exterior membrane and furnishes the shoe with a formidable imperviousness to water. Welded TPU Film - Protects the shoe without adding bulk. Bellows Tongue - Prevents debris from infiltrating the shoe. M-Select Fresh Odour Control - Works in concert with the breathable mesh exterior to allow air to permeate the shoe and prevent odour carrying bacteria from spreading.