The Icebreaker 200 Oasis women's baselayer leggings are made of warm merino wool jersey for an incomparable comfort and natural odour resistance. It is the perfect foundation to wear under your winter sports equipment for your everyday cold-weather activities. Its flatlock seams will help to reduce irritation caused by chafing when you're on the move. This thermal layer is part of a layering system that provides comfort and warmth for your outdoor activities. Easy to layer, this base layer enables you to regulate your body temperature by wicking moisture away. This onion layering system is made of three types of clothing. The first layer, worn next-to-skin will provide warmth and quickly move moisture away from your skin. Then, the second layer, is the insulation or fleece, that provides warmth while also dissipating heat during periods of high output. And finally, the third layer, the shell, which is the most weather-protective layer, worn on the outside of all other layers.