" To keep warm, wear three layers "
The first layer to convey moisture
You can choose between natural and synthetic base layers. Natural materials include merino wool, known for its thinness, breathability, insulation and antibacterial properties. Synthetic materials include polyester or acrylic, to which elastane can be added for an increased freedom of movement.
Helpful hints: when ski touring, snowshoeing or splitboarding, it's a good idea to have a spare layer of clothing in your bag. After sweating during ascents, putting on a dry piece of clothing at the top makes descents more pleasant.