This garment contains VILOFT, a speciality viscose fibre of natural origin. The VILOFT fibre helps trap pockets of air to create a thermal layer and provide highly effective insulation against the cold. VILOFT has superior wicking ability; instead of trapping moisture between the skin and the garment, it aids evaporation to keep you dry and comfortable. The combination of VILOFT with hardwearing polyester creates a garment that is soft and lightweight yet exceptionally warm and very comfortable to wearGarments made with VILOFT are easy to care for, retaining their shape and colour after machine washing at medium temperatures.