Features of the Kamik Kids' Snowcoast3 Boot ZylexA(R) liner wicks moisture away, traps body heat in, and keeps cold air out Seam-sealed construction to seal out Snow and water Lightweight RubberHe Outsoles Reflective NightRays patches for after dark Easy pull-tab and knob on bungee laces to cinch shut Comfort Rating: -40? F / -40? C