Crocs Nadia is a vegan winter boot that features that famous Crocs croslite™ material, 11 inch fleece lined cloth shaft with fleece trim, and the shoe part is rubber. Nadia is available in black, brown, khaki, or pink. Crocs Nadia provides you with croslite ™ comfort while the fleece shaft keeps you warm. SIZES SHOWN ARE WOMENS US SIZES.