The ultimate combination of warmth and breathability. The Magnaclava uses powerful magnets to create a seal against the cold. Pull the mask down to let off steam or wear it up for warmth and protection from the wind, cold and snow. Features: magnet closure, helmet compatible, breathable. This balaclava is labeled S/M, but it was too big/loose on me (I'm the model in most of my pictures). In my opinion, in actual fit, it is a Women's LARGE or a Men's SMALL. Worn only twice and cleaned. Ski, snowboard, buff