Balaclava (Hats)

One piece of knit fabric covers the head, the neck and most of the face on a balaclava, with a single opening left for the eyes, nose and mouth, or sometimes just the eyes. Nothing else in this group reaches the neck at all, which is the detail that sets it apart from every other knit or felt hat here.

Merino wool and synthetic knits such as polyester or a spandex blend are the two common fabrics. Merino keeps insulating even once it is damp with sweat or melted snow and resists holding odor over a long day, while a synthetic knit dries faster and stretches more but turns clammy once it is soaked through. A thin synthetic layer is built to sit under a helmet without adding bulk, and a thicker merino version is built to be worn alone in open, dry cold.

A beanie covers the crown and ears alone and leaves the whole neck and face open to wind, where this closes that gap completely. A trapper hat, with its fold down ear flaps, covers more than a beanie but still leaves the neck and lower face bare, sitting between the two in coverage. Nothing here traps as much warm air against the skin as a full balaclava does, and nothing here fogs a pair of glasses the way this one can either.

Motorcycling, skiing, snowboarding and cold weather cycling all call for one, mainly because it layers thin and smooth under a helmet without bunching at the pressure points a hood would create. Hard outdoor work in extreme cold suits it for the same reason: full coverage with no gap at the neck for wind to find. Anyone in a warm climate, or doing hard aerobic work in only mild cold, should skip it, since trapping heat around the whole head and neck at once tips into overheating fast once effort rises.

Sizing runs by stretch rather than by the inch: most balaclavas fit a range of head sizes through the knit alone, though a few come in small, medium and large so the face opening lines up correctly over the eyes. The honest weakness is fogging: warm breath escaping through the mouth opening rises straight into a pair of glasses or ski goggles worn above it, and only a fitted nose bridge or a breathable panel over the mouth cuts that down. Hand wash it in cool water and lay it flat to dry, since a hot dryer shrinks wool and can melt the stretch out of a synthetic blend.