Light and insulated, the Arcteryx Atom Jacket works as a midlayer or standalone jacket. The lightweight wind-resistant and water-repellent Tyono 20 shell is treated for extra durability, and paired with stretch fleece side panels for improved ventilation and freedom of movement. Its Coreloft synthetic insulation retains heat when wet, plus it can withstand repeated packing/unpacking. Warm and breathable, weather-resistant, packable, and durable, the men's Arcteryx Atom Jacket is everything you could ever need in a midlayer. Its perfect for resort skiing or as a standalone shoulder-season piece. Light, soft Tyono 20 shell is finished with a durable water repellent (DWR) to repel moisture Resilient Coreloft Compact 60 synthetic insulation for efficient, effective, and resilient warmth Mid-height insulated and fleece-lined collar for extra coverage Winter 2023/24 product Equipped With Durable Water Repellent (DWR) DWR is a fabric treatment that improves the water-repellency of the outer layer of the material while maintaining its breathability.