Experts in technical outerwear, Arc'teryx promise style and substance as standard. The Atom jacket is the perfect example, packed full of innovative fabrics and design to ensure you stay warm, dry and comfortable no matter what you're doing. 100% Nylon Body, Knit Fleece Contrast Panels, Coreloft™ Compact 60 Insulation, Low Profile StormHood™, No Slip Zip™, 2 Hand Pockets, Internal Pocket, Machine Washable, Printed Branding, Style Code: X000009556-001280. Your new go-to. This men's Atom Hoodie from Arc'teryx makes the ultimate all-in-one jacket. In Black Sapphire, this light, durable layer has a tough ripstop shell. A water and wind-repellent finish pairs with a hood to keep you covered. Coreloft Compant 60 insulation locks in the heat. Stretch fleece side panels deliver extra give and airflow. Finished with a signature Arc'teryx logo. Machine washable.