LIFA stay warm technology is a unique fibre invented by Helly Hansen and used in their base layers for more than 40 years. Lifa merino baselayers are for extra warmth on cold days. With a unique 2 in 1 construction, you get the best of both worlds.

The synthetic LIFA Stay Warm technology interior pushes moisture away from the skin while maintaining an itch free feel. The 100% merino wool exterior generates extra warmth while wicking the moisture.