Base layers are the foundation of a good outfit if you want to enjoy being outdoors and being active. Choosing Merino Wool base layers from Icebreaker and SmartWool will give you 100% natural products that are very comfortable to wear directly on the skin and that have excellent ability to regulate perspiration. Merino Wool contains a natural disinfectant, which means it won’t smell. Icebreaker and SmartWool items are easy to maintain and can be washed with other clothes in the washing machine at 40º.