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Gregory Baltoro 65 vs Zpacks Arc Scout 37L

Weight and specs compared for 2026 — and which one to choose.

Zpacks Arc Scout 37L is the lighter option — 1,790 g lighter than the Gregory Baltoro 65 (82% less weight). If grams matter to you, that is the one to beat.
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Spec Gregory Baltoro 65 Zpacks Arc Scout 37L
Weight 2,180 g · 2.180 kg · 4.81 lb 390 g · 0.390 kg · 0.86 lb
Brand Gregory Zpacks
Category Backpack Backpack
Gregory Baltoro 65
2,180 g

Premium 65L pack with Response A3 suspension for heavy loads.

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Zpacks Arc Scout 37L
390 g

Compact Dyneema frameless pack for lightweight overnighters.

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Gregory Baltoro 65 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 1,790 g (82%) lighter than the Gregory Baltoro 65 (2,180 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.

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