Offering excellent thermal insulation, the Peter Storm Women's Thermal Base Layer Pants have a close fit and a stretch design making them great for active cold weather pursuits such as skiing and trail running. These pants are made from a polyester/viscose blend with a brushed reverse, which is a soft layer that retains heat effectively, making them the ideal base for any effective layering system. The fold over hem creates a comfortable seal around the base of the pants, recommended for activities such as hiking, walking, running, and snowsports.