Outdoor Research Option Balaclava™ This versatile alpine balaclava is stretchable enough to wear as a neck gaiter or a hat when conditions permit. The smooth, stretchy polypro fabric offers light insulation and excellent moisture management. Features: Thermodynamic™ fabric; durable nylon face and looped polypropylene interior Flat-seam construction Contoured shape Works as a neck gaiter, balaclava, or hat