Exceptionally silky, soft Comfort Fleece has a microfiber fleece on the inside while the outside is a durable polyester. The stretch fabric gives a customized fit while providing exceptional warmth and protection from the elements. For ultimate comfort we eliminated the irritating seam down the front of the face and used flat seams. Whether you are climbing Mt. Everest or hitting the slopes in the Alps, this Comfort Fleece balaclava can battle any cold environment.