When you're hiking through the snow, cross-country skiing or fitness training in winter, you often need a bit of extra insulation during rest breaks. That's exactly what the Womens Atmosphere Skirt from Jack Wolfskin gives you. Just pull it on over your running tights or hiking trousers and you'll get instant warmth. The thermal performance is provided by the high-performance synthetic fibre insulation. It was specially developed for active sports clothing and wicks moisture fast and efficiently to the outside. Stretchy fleece inserts enhance the freedom of movement. And when you no longer need it, this lightweight skirt packs down small and disappears inside your day pack.