Durston Gear Kakwa 55 UltraGrid Pack Small vs Zpacks Super Nero Ultra 50L Backpack
Weight and specs compared for 2026 — and which one to choose.
Updated ultralight pack size S, 28.9oz, with improved hipbelt and durability
Full details →Versatile ultralight frameless pack in Dyneema Composite Fabric. Sized for multi-day thru-hiking trips while staying under 350g total weight.
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Durston Gear Kakwa 55 UltraGrid Pack Small vs Zpacks Super Nero Ultra 50L Backpack: which should you buy?
If saving weight is your priority, the Zpacks Super Nero Ultra 50L Backpack wins — at 345 g it is 475 g (58%) lighter than the Durston Gear Kakwa 55 UltraGrid Pack Small (820 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.