Merrell Women's Antora 3 Thermo Mid Zip Waterproof BootA capable and versatile winter boot inspired by sneakers, built for functional and all day wear. With 100 grams of insulation, your feet will stay warm walking around town or outside on a light hike. Features 100 grams Primaloft Gold Eco Series synthetic insulation Waterproof membrane seals out water and lets moisture escape Vibram Icetrek outsole designed to provide the improved grip on very cold, icy, or snowy surfaces Medial zipper and heel pull