Active layer for high-energy adventure

For a UK audience, the name of Amundsen’s ‘Five-Mile’ Half Zip mid-layer is a bit misleading. In Scandinavia, a ‘mile’ is ten kilometres, so this is a garment that is built for some truly massive days. Designed for strenuous, fast-moving tours in cold mountain conditions, the 5 Mila is made in a lightweight merino blend that’s quick-drying and moisture-wicking but insulating at the same time. It’s itch-free so you can wear it next to your skin as a heavier base layer, and the design has a vintage sportswear vibe with go-faster stripes down the arms. You’ll need them if you’re going to eat up 50km before the day’s out…