The Coal The U.H.B. stands for The Under-Helmet or The Under-Hat Balaclava, but we could list a few other possibilities: ultra-handy, uber-warm, UV-hinderer... maybe that last one is a stretch, but the U. H. B. has just enough stretch in its moisture-wicking, lightweight polyester construction to keep you comfy and protected during an all-day shred trek through backcountry. It'll block snow and wind during a storm and keep your face protected from bright sun reflecting off the snow, and laser-cut holes increase breathability to boot!