Women's Saltwater Wool Emboss Duck Boot in Dark Grey by SperryMaterials: Duck inspired boot with wool upper Water resistant upper and waterproof rubber shell keeps feet dry on rainy days Mid height 6 shaft. Just tall enough Barrel tied rawhide laces Rust proof eyelets Comfort: Full lined with Micro fleece for warmth underfoot Side zipper for easy on and off allows laces to remain tied Traction: Patented Wave Siping non marking, rubber outsoles wont scuff floors but gives you sure footing, from boat deck to back