Atom Heavyweight Hoody is the warmest jacket in Arc'teryx's well-known Atom series. It is made with a breathable Tyono™ 30 outer material that is lightly wind-resistant, and lined with an ultralight Coreloft™ Compact insulation that provides excellent warmth, even when damp.

The jacket has a slim fit with Permeair™ panels at the sides for optimal freedom of movement and ventilation. Other functional details include two hand pockets and a zipped internal pocket, an adjustable StormHood™ hood, elasticated cuffs, and a No Slip Zip™ zipper that will not open on its own.

Outer material: Tyono™ 30. Insulation: Coreloft™ Compact.