The Atom Hoody by Arc'teryx is an extremely versatile men's hooded jacket, designed to eliminate any doubts about choosing technical clothing during windy hikes, climbing sessions, or as a mid-layer for winter ski touring. Featuring Coreloft Compact 60 synthetic insulation, this jacket retains warmth even in humid conditions and maintains its loft over time, providing a more reliable alternative to down for high-intensity activities year-round. The outer shell made of Tyono 20 is lightweight, soft, and breathable, treated with a PFAS-free FC0 DWR water-repellent finish to repel moisture without compromising breathability. The technical stretch fleece side panels significantly enhance ventilation and freedom of movement, while the 20D recycled nylon lining feels soft against the skin and helps regulate body temperature. The jacket boasts a slim fit with an articulated structure that follows body movements, complemented by an insulated and adjustable StormHood with a structured mini visor. Functional details include elasticized knit cuffs, an adjustable hem to seal in warmth, and a No Slip Zip front zipper equipped with easy-to-use TPU pulls, even with gloves. Weighing only 355 grams and highly compressible, the Atom Hoody includes two side pockets with hidden zippers and an internal chest pocket, all made following the strict bluesign sustainability criteria. This jacket represents the perfect balance of warmth, wind protection, and moisture management for any outdoor enthusiast seeking a reliable piece in every season.