Quarter Package: Tech nylon with thermoformed X-rib pattern w/ abrasion guardLining Material: Brushed nylonAnkle Padding: Closed-cell foamTongue Construction: Anatomical 1-piece feltFootbed: Standard comfortThermoformable: Thermo-adjustable upperOutsole: TPRChassis: Hi-Lo Ventilator SteeleWheel: 68-68-72-72 -> 82A