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Durston Gear Wapta 30 Ultralight Backpack vs REI Co-op Flash 45

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

Durston Gear Wapta 30 Ultralight Backpack is the lighter option — 805 g lighter than the REI Co-op Flash 45 (68% less weight). If grams matter to you, that is the one to beat.
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Spec Durston Gear Wapta 30 Ultralight Backpack REI Co-op Flash 45
Weight 385 g · 0.385 kg · 0.85 lb 1,190 g · 1.190 kg · 2.62 lb
Brand Durston Gear REI Co-op
Category Backpack Backpack
Durston Gear Wapta 30 Ultralight Backpack
385 g

Functional ultralight pack, 13.6oz, highly durable despite minimal weight

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REI Co-op Flash 45
1,190 g

Lightweight 45L versatile backpacking pack.

Full details →

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Durston Gear Wapta 30 Ultralight Backpack vs REI Co-op Flash 45: which should you buy?

If saving weight is your priority, the Durston Gear Wapta 30 Ultralight Backpack wins — at 385 g it is 805 g (68%) lighter than the REI Co-op Flash 45 (1,190 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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