A long and comfortable day spent outdoors begins with the right base layer. At Fjällräven, we design our women’s base layer bottoms to help you maintain a comfortable body temperature, and to keep you dry by wicking away moisture. With favourites like the <a href="https://www.fjallraven.com/uk/en-gb/women/trousers/base-layer-bottoms/bergtagen-merino-190-lj-w/">Bergtagen Merino 190 LJ W</a> thermals and <a href="https://www.fjallraven.com/uk/en-gb/women/trousers/base-layer-bottoms/keb-fleece-trousers-w/">Keb Fleece Trousers W</a>, you’re ready for trekking and ski touring, as well as day hikes and comfortable days spent at home. Below, find our fabric guide, fit tips, and care advice to choose the perfect pair for your outdoor life.