For the glaring reality of halting wind and icy breeze, nothing trumps a warm balaclava. Ours is made with Capilene 4, the warmest and most breathable baselayer in the Capilene family. It is soft, stretchy and compressible, with a smooth jersey face that slides beneath layers and a brushed-fleece inside to insulate, wick moisture, and rest smoothly against bare skin. The face opening fits above your mouth or under your chin, depending upon the coverage you need. Constructed with 3.7-oz proprietary performance Polartec Power Dry High Efficiency fabric, with Polygiene permanent odor control. One size.