The Progress MRN HIPSTER women’s briefs are made of a blend of two functional materials that feel incredibly soft to the touch. Merino wool has excellent thermal properties. It keeps you warm or cools you depending on your current body temperature. It also prevents bad odours and retains its warming properties even when wet. Polyester promotes faster moisture-wicking and drying. It is also lightweight, so it does not weight you down and still feels nicely warm and soft to the touch.