Winter Warmth With Serious Versatility – The Atom Ar Jacket Is Built To Handle A Range Of Adventure. Wear It As A Standalone During Rest Phases, Evenings At Camp, Or Trips To Town. Use It As A Breathable Midlayer In Cold, Wet Conditions. Packable And Lightweight, Its Coreloft™ Synthetic Insulation Is Efficient, Effective And Resilient. The Wind-resistant And Water-repellent Tyono™ 30 Shell Is Treated For Extra Durability, And Air-permeable Permeair™ Panels Under The Arms Improve Ventilation.