Our heavyweight Micro Fur Shellaclava neck warmer portion of this Shellaclava is comprised of two layers of luxurious Italian Micro Fur, which traps heat, is super soft & is lightweight for unbeatable warmth to weight performance. The single-layer Comfort Shell hood provides moisture management and is joined together with the double-layer neck warmer seamlessly. It's designed with comfort in mind on the inside, but also engineered to keep the wind and snow off your neck and out of your jacket all day long.