Wear this cap however you’d like: ear flaps down for added warmth or ear flaps up for on-mountain style. The Atomic Ear Flap Cap is a packable, insulated hat lined with a light layer of Primaloft® insulation for all of your outdoor adventures. Made from leftover materials from our skiwear line to reduce waste, this wind-resistant cap is treated with a PFC-free Durable Water Repellent treatment for weather protection. It has an adjustable cinch drawcord in the back of the head to give you a perfectly snug fit.