Arc'teryx Atom Hoody vs Arc'teryx Gamma Lightweight Hoody
Weight and specs compared for 2026 — and which one to choose.
Versatile synthetic insulated hoody with Coreloft Compact insulation. Excellent moisture resistance and packability; ideal as standalone or layering piece.
Ultralight softshell mid-layer at 9.2 ounces. Windproof and breathable without insulation, designed for active outdoor pursuits requiring minimal weight.
Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.
HikeLoad is reader-supported. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Learn more.
Arc'teryx Atom Hoody vs Arc'teryx Gamma Lightweight Hoody: which should you buy?
If saving weight is your priority, the Arc'teryx Gamma Lightweight Hoody wins — at 261 g it is 94 g (26%) lighter than the Arc'teryx Atom Hoody (355 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest clothing - mid layer page, or browse the full gear weight database.