A sauna hat keeps the hottest air in the room off your head, ears and hair, so you stay on the top bench until you are ready to come down. The Rento Kenno is a soft recycled cotton blend in several colors, the Rento Linen Terry has a looped linen surface, and the Auroom Sauna Hat is black linen and cotton with a pointed crown. All three go in the washing machine. If two of you sit the bench, get two.

Wool or cotton, how to wash one and how it should fit: the answers are below the hats. For the rest of the session, see towels and robes and sauna pillows.

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    Sauna hat questions

    What is a sauna hat?

    A soft cap of wool felt, linen or cotton that you wear in the hot room, pulled down over the tops of your ears. It keeps the sauna heat off your hair and scalp.

    Why wear a hat in a hot sauna?

    Heat rises, so the hottest air in a sauna sits up by the ceiling, right where your head is on the top bench. Your head and ears feel that heat first. A hat insulates them, so you can stay up high for the whole round instead of ducking down when your head has had enough.

    Wool felt, linen or cotton?

    Wool felt is the traditional choice: thick, holds its shape, and a poor conductor of heat. It needs gentle care, because hot water and a dryer shrink felt. Linen and cotton hats are softer and go in the washing machine. Every hat we carry right now is a machine-washable cotton or linen blend.

    How do I wash and dry a sauna hat?

    After each session, hang it where air moves so it dries all the way through, and never dry it on or over the heater. For the Rento Kenno, Rento's label says: wash it before first use and on its own, gentle cycle at 104°F, stretch it back to shape while wet, iron on medium heat, no tumble dryer and no dry cleaning. Expect about 5% shrinkage. A wool felt hat is hand wash only, in cool water, then reshaped and left to air dry.

    What size sauna hat do I need?

    Sauna hats are one size. The Rento Kenno measures about 11.4 x 12.6 in laid flat and closes with a hook-and-loop tab at the back. It should cover the tops of your ears. Allow for a little shrinkage on the first wash.

    Are sauna hats for men or women?

    Both. Rento makes the Kenno for women and men, and the same hat fits either.