The perfect 3 season hat. Made from a wool blend with a integrated tuck away ear warmer, this hat will keep you warm when the snow's falling. This hat is made using c_change membrane created by Schoeller Switzerland to maintain an even temperature. It works much like a pinecone, the membrane opens when the outside temperature rises, and close again when the temperature drops. Designed to repel both rain and snow, the internal Hydrofil sweatband also wicks away moisture to keep you feeling comfortable all day long.