Designed to keep your feet comfortable during prolonged excursions in the field. Contains a breathable fleece lining, while the stretch-fit topline binding snugly fits around your calf to keep in warmth. The instep area has 2mm of thermal foam underlay for additional warmth. Internal contoured footbeds with EVA molded midsoles provide comfort and support. 5 mm CR flex-foam bootie with four-way stretch nylon is 100% waterproof, lightweight, flexible, and buoyant. Rugged MS-1 outsoles offer traction and stability. Achilles overlay and wrap-up toe bumper for added protection. Comfort rating: -40° to 60°. Imported.