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Deuter Aircontact Core 50+10 vs Durston Gear Kakwa 40

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

Durston Gear Kakwa 40 is the lighter option — 1,155 g lighter than the Deuter Aircontact Core 50+10 (59% less weight). If grams matter to you, that is the one to beat.
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Spec Deuter Aircontact Core 50+10 Durston Gear Kakwa 40
Weight 1,950 g · 1.950 kg · 4.30 lb 795 g · 0.795 kg · 1.75 lb
Brand Deuter Durston Gear
Category Backpack Backpack
Deuter Aircontact Core 50+10
1,950 g

Versatile 50+10L pack with Aircontact back system.

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Durston Gear Kakwa 40
795 g

Ultralight 40L internal-frame thru-hiking pack in Ultra 200X fabric, with a hollow aluminum U-frame and 15L of external storage.

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Deuter Aircontact Core 50+10 vs Durston Gear Kakwa 40: which should you buy?

If saving weight is your priority, the Durston Gear Kakwa 40 wins — at 795 g it is 1,155 g (59%) lighter than the Deuter Aircontact Core 50+10 (1,950 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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