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Gregory Optic 48 vs Gregory Zulu 35 Backpack

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

Gregory Optic 48 is the lighter option — 170 g lighter than the Gregory Zulu 35 Backpack (11% less weight). If grams matter to you, that is the one to beat.
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Spec Gregory Optic 48 Gregory Zulu 35 Backpack
Weight 1,370 g · 1.370 kg · 3.02 lb 1,540 g · 1.540 kg · 3.40 lb
size M/L
Brand Gregory Gregory
Category Backpack Backpack
Gregory Optic 48
1,370 g

Lightweight 48L trail pack with suspended mesh back panel.

See it in your base weight → Full details →
Gregory Zulu 35 Backpack
1,540 g

Day hiking pack, 46.9oz, ventilated suspension system for comfort

See it in your base weight → Full details →

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Gregory Optic 48 vs Gregory Zulu 35 Backpack: which should you buy?

If saving weight is your priority, the Gregory Optic 48 wins — at 1,370 g it is 170 g (11%) lighter than the Gregory Zulu 35 Backpack (1,540 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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