These Long Jane / Leggings / Long Johns are made from a winter warm material and will provide you with ultimate comfort. Material Composition: 80% Polyester & 20% Viscose. Fully brushed fabric for extra warmth - ideal for wearing under clothes during hiking, skiing and other outdoor activities. Great for using as a base layer during cold weather conditions. Easy care home machine wash at 50C. Maintains warmth even after many washes. Carefully designed in England.