Traditional 5mm Wool Sauna Hat – Maximum Heat ProtectionBuilt for the Hardcore Steam and Sauna Enthusiasts using New Zealand wool. Stop the heat from cutting your session short. Because heat rises, your head overheats long before the body is fully warm. A wool sauna hat acts as thermal insulation, slowing heat exposure to the scalp and allowing your body to adapt gradually. This is why sauna hats are traditionally used in Finnish sauna and Slavic banya culture they are essential tools, not just