The stratus features a 100 recycled polyester shell that sheds light weather and an adjustable drawcord hem to seal out frigid gusts inside the stratus icebreaker have used their innovative 180gm merinoloft insulation which forgoes traditional synthetic fills for a sustainable water resistant merino blend featuring recycled wool content that provides ample warmth even when wet two zippered pockets keep your hands warm and store your small essentials when youre on the move icebreaker m