The Women’s Sierra Sport Strap Boots are made with a waterproof DryVent™ fabric and light-yet-toasty synthetic insulation. Equal parts style and performance, these bold winter boots will be your first choice when temperatures drop. * Upper| Combination of a ribbed textile and waterproof, full-grain leather; DryVent™ waterproof membrane; 100 g synthetic insulation; OrthoLite® sockliner; Webbing straps with easy on/off buckles for adjustability; Reflective webbing detail on the heel for enhanced visibility; Sole Unit| Single-density, molded-EVA midsole; Rubber wrap in the toe for additional durability and protection; Surface Control™ rubber outsole optimized for winter conditions Style:NF0A52RL Pre-owned but feels almost new in very good condition with some scuff/markings from normal wear.