Merrell Women's Antora 3 Thermo Mid Zip Waterproof Snow Boot The evolution of the Antora built to balance performance and style for a cold weather hiking boot alternative and trail running style. Built with lightweight synthetics and soft leather and a unique protective design. Paired with a Vibram Ice Trek outsole for best in class traction when the temperature drops paired with 100 grams of insulation, cold winter's will never be a problem.