Why wear a hat in the sauna?

Heat rises to your head

Sauna air settles in layers, hottest under the ceiling and coolest at the floor. Sitting on the top bench, your head is higher than the rest of you, so it sits in hotter air.

Felt holds still air

A felt hat insulates in two ways: through the felt itself, and through a layer of still air between the felt and your scalp. In our design calculations, the air does about as much as the felt.

The gap is the point

Our hats are designed so the widest air gap at the sides of your head is about 11 to 12 mm, depending on the hat and size: just under the 12.6 mm at which trapped air starts to circulate.

A close fit, on purpose

By our calculations, a roomier hat would let the air inside circulate and insulate less, so the fit is close.

Height is for looks

The air above your head stays still too, but past about 25 mm of space a taller crown adds almost nothing. A crown's height comes down to the shape you like.

Wool for the top bench

Wool felt is the hat for the top bench. Cotton terry scorches at a lower temperature than wool, so the cotton beanie is not for the top bench, and it's made only if there's enough interest.

Beanie or bucket

The same felt and the same sizes. The bucket adds a 60 mm brim that falls clear of your ears; the beanie is lighter, about 59 g against 90 g dry in size S. The bucket is made only if there's enough interest.

Hang it up

Every hat has a loop, so it can hang up between rounds and dry after a session, instead of sitting wet in a bag.

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