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Black Diamond Beta Light 45L vs Gregory Paragon 58

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

Black Diamond Beta Light 45L is the lighter option — 790 g lighter than the Gregory Paragon 58 (47% less weight). If grams matter to you, that is the one to beat.
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Spec Black Diamond Beta Light 45L Gregory Paragon 58
Weight 890 g · 0.890 kg · 1.96 lb 1,680 g · 1.680 kg · 3.70 lb
Brand Black Diamond Gregory
Category Backpack Backpack
Black Diamond Beta Light 45L
890 g

Lightweight 45-liter backpack designed for alpine and minimalist backpacking. Can be stripped to 650g by removing hip belt and internal stays.

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Gregory Paragon 58
1,680 g

Lightweight 58L pack with FreeFloat suspension system.

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Black Diamond Beta Light 45L vs Gregory Paragon 58: which should you buy?

If saving weight is your priority, the Black Diamond Beta Light 45L wins — at 890 g it is 790 g (47%) lighter than the Gregory Paragon 58 (1,680 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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