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Gregory Optic 48 vs Liteway Biggie Pack 45L

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

Liteway Biggie Pack 45L is the lighter option — 690 g lighter than the Gregory Optic 48 (50% less weight). If grams matter to you, that is the one to beat.
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Spec Gregory Optic 48 Liteway Biggie Pack 45L
Weight 1,370 g · 1.370 kg · 3.02 lb 680 g · 0.680 kg · 1.50 lb
Brand Gregory Liteway
Category Backpack Backpack
Gregory Optic 48
1,370 g

Lightweight 48L trail pack with suspended mesh back panel.

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Liteway Biggie Pack 45L
680 g

Frameless ultralight 45L backpack at 680g (590g without cords), durable ECOPAK material construction

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Gregory Optic 48 vs Liteway Biggie Pack 45L: which should you buy?

If saving weight is your priority, the Liteway Biggie Pack 45L wins — at 680 g it is 690 g (50%) lighter than the Gregory Optic 48 (1,370 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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