The Mountain Warehouse Women's Talus Base Layer Bottoms are crafted from 100% polyester fabric. This design offers a simple, plain aesthetic. The fabric technology includes features such as heat retention for keeping you warm, high warmth to combat cold conditions, Isotherm for maintaining an even body temperature, lightweight construction for easy movement, moisture wicking abilities to keep you dry, and quick drying properties for convenience after use. These bottoms are pull-on style for easy wear.