Air Structure Triax 91 "Grey Fog/Purple" sneakers Released in 1991, the Nike Air Structure achieved cult status among collectors and dedicated sneakerheads. This new version pays homage to the cult-favourite style with micro suede and mesh overlays cover the upper allowing the shoe's colourway to stand out. Imported Composition Outer: Leather 100%, Suede 100%, Polyamide 100% Sole: Thermoplastic Polyurethane (TPU) 100% Lining: Fabric 100%