← Gear database
Osprey Exos 58 vs Zpacks Arc Scout 37L
Weight and specs compared for 2026 — and which one to choose.
Zpacks Arc Scout 37L is the lighter option — 1,030 g lighter than the Osprey Exos 58 (73% less weight). If grams matter to you, that is the one to beat.
Zpacks Arc Scout 37L
390 g
Compact Dyneema frameless pack for lightweight overnighters.
Full details →HikeLoad is reader-supported. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Learn more.
Osprey Exos 58 vs Zpacks Arc Scout 37L: which should you buy?
If saving weight is your priority, the Zpacks Arc Scout 37L wins — at 390 g it is 1,030 g (73%) lighter than the Osprey Exos 58 (1,420 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 backpack page, or browse the full gear weight database.