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Gregory Baltoro 75 vs Gregory Optic 48

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

Gregory Optic 48 is the lighter option — 990 g lighter than the Gregory Baltoro 75 (42% less weight). If grams matter to you, that is the one to beat.
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Spec Gregory Baltoro 75 Gregory Optic 48
Weight 2,360 g · 2.360 kg · 5.20 lb 1,370 g · 1.370 kg · 3.02 lb
Brand Gregory Gregory
Category Backpack Backpack
Gregory Baltoro 75
2,360 g

Workhorse 75L pack for extended expeditions and heavy loads.

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Gregory Optic 48
1,370 g

Lightweight 48L trail pack with suspended mesh back panel.

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Gregory Baltoro 75 vs Gregory Optic 48: which should you buy?

If saving weight is your priority, the Gregory Optic 48 wins — at 1,370 g it is 990 g (42%) lighter than the Gregory Baltoro 75 (2,360 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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