Patagonia Nano Puff Hoody vs Arc’teryx Atom Hoody (2026)

Choose the men’s Nano Puff Hoody if you want official regular-fit, packable synthetic insulation at $299: official weight 400 g / 14.1 oz, 60-g PrimaLoft Gold Insulation Eco, a 100% recycled polyester ripstop shell and lining with a DWR made without intentionally added PFAS, an internal zippered chest pocket that doubles as a stuffsack, and official Fair Trade Certified factory language. Choose the men’s Atom Hoody if you want the official slightly lighter, fitted midlayer at $300: official weight 355 g / 12.5 oz, Coreloft Compact 60, Tyono 20 face fabric, stretch-fleece side panels, an adjustable insulated StormHood, and a size M center-back length of 29 in / 73 cm. This is the hooded men’s pair, not the non-hooded Nano Puff Jacket or Atom Jacket, and not the Atom SV or Atom SL. We have not worn these hoodies, and we don’t give scores. Switchback’s Nano Puff Hoody review, last updated March 3, 2026, listed $289 and 14.1 oz for the men’s hoody and listed the Atom Hoody at $300 and 12.5 oz. OutdoorGearLab’s Atom Hoody review, dated November 4, 2026, listed $300 and weighed the jacket at 12.8 oz, 0.3 oz above the official 12.5 oz figure. CNN Underscored’s hoody comparison, updated July 26, 2024 and not treated as a 2026 retest, listed $289 and 363 g / 12.8 oz for the Nano Puff and “from $180” and 370 g / 13.1 oz for the Atom — those prices and weights disagree with the official $299 / 400 g and $300 / 355 g we fetched November 10, 2026, so we cite the official pages and report the older figures separately.