Stay in the heat longer, sweat deeper, and protect your hair with the ultimate merino wool sauna hat. Zen Them Sauna Hats regulate head temperature, prevent heat fatigue, and boost your sauna endurance so you get more benefits from every session. Naturally breathable, antibacterial, and built for high-heat performance, this sauna hat keeps you cooler for longer — without sacrificing comfort. Perfect for traditional saunas, ice-bath contrast sessions, and everyday wellness routines.