Devold Expedition Balaclava - As a part of Devold's superbly warm Expedition series, the Expedition Balaclava is made of highly comfortable and warm merino wool. The manufacturer gives all Expedition series clothing and accessories a temperature rating of +5ºC ... -50ºC! The added warmth of a balaclava can make all the difference in staying warm, as a huge part of body heat loss happens around the head and shoulders. Take good care of your Merino apparel - regular detergents are a bit over the top for use with wool, so we recommend using [Nikwax Wool Wash](/wool-wash/), regardless of whether you wash your apparel in a machine or by hand.