The Zeroweight Insulator cross-country shorts provide exceptional warmth. They are made from 91 percent recycled materials and feature Freudenberg's thermo insulation, which is produced from used plastic bottles. The 4-way stretch jersey shorts with a high waistband fit comfortably over your tights. The knee-length design is perfectly tailored for Nordic skiing and keeps out the icy cold. The concealed pocket at the waistband allows you to store essential items, and the full-length side zippers make it easy to put on and take off. When paired with long tights, they are suitable for cross-country trails as well as ski tours or winter runs in sub-zero temperatures. Enjoy maximum warmth and breathability on cold days.