Arc'teryx Atom Jacket vs Arc'teryx Atom LT Hoody
Weight and specs compared for 2026 — and which one to choose.
Insulated mid-layer with Coreloft Compact synthetic fill and stretch panels. PFAS-free DWR finish (2025). Versatile for active use in cold wet conditions.
Coreloft insulated hoody with excellent breathability.
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 Jacket vs Arc'teryx Atom LT Hoody: which should you buy?
If saving weight is your priority, the Arc'teryx Atom LT Hoody wins — at 318 g it is 17 g (5%) lighter than the Arc'teryx Atom Jacket (335 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.