For the Sno base-layer we have used our favorite yarn from Sudwolle, the Nm 1/60, 100% super fine merino wool, 17.5 microns and added some Creora-Eco-Soft, to make the fabric stretchy. It's a single jersey that's light and breathable. The boxer shorts are perfect for layering under your ski pants. This Sno piece comes in a box that we have tried to keep as simple and minimalistic as possible, so that you can use it as a small storage box.