The Progress NORDIC LT-B boys’ tights are made of a merino wool and polyester blend that feels amazing 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. All of this ensures 100 % comfort and protection from cold. And let’s not forget the leggings’ cool winter themed design.