Durston Gear Kakwa 55 UltraGrid Pack Small vs Zpacks Nero Classic Ultra 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 →Frameless ultralight backpack made from Dyneema Composite Fabric. Minimalist design for SUL hikers. Top-loading with roll-top closure.
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Durston Gear Kakwa 55 UltraGrid Pack Small vs Zpacks Nero Classic Ultra Backpack: which should you buy?
If saving weight is your priority, the Zpacks Nero Classic Ultra Backpack wins — at 289 g it is 531 g (65%) 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.