Wm's PrimaLoft® Evolve Aerothermal HoodyBreathes like a feather. Feels like a fleece. The Aerothermal Hoody gives you next to skin comfort and super light, breathable warmth for active layering. PrimaLoft Active Evolve synthetic insulation mimics high loft fleece softness without the bulk while boosting temp regulating powers. All the cozy warmth without all the weight, this breathable layer allows you to shed heat without shedding layers for fidget free comfort on the skin track, trail, or