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Zpacks Nero Classic 50L vs Zpacks Nero Classic Ultra Backpack

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

Zpacks Nero Classic Ultra Backpack is the lighter option — 41 g lighter than the Zpacks Nero Classic 50L (12% less weight). If grams matter to you, that is the one to beat.
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Spec Zpacks Nero Classic 50L Zpacks Nero Classic Ultra Backpack
Weight 330 g · 0.330 kg · 0.73 lb
50L, standard straps, no belt (black); blue option listed as 340
 289 g · 0.289 kg · 0.64 lb
as listed, default variant 30L / Standard Straps / no belt (page has no Regular/Medium; 40L = 325 g, 50L = 330 g)
Brand Zpacks Zpacks
Category Backpack Backpack
Zpacks Nero Classic 50L
330 g

Frameless ultralight backpack made from Dyneema Composite Fabric. Minimalist design for gram-conscious hikers and ultralight enthusiasts.

See it in your base weight → Full details →
Zpacks Nero Classic Ultra Backpack
289 g

Frameless ultralight backpack made from Dyneema Composite Fabric. Minimalist design for SUL hikers. Top-loading with roll-top closure.

See it in your base weight → Full details →

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Zpacks Nero Classic 50L 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 41 g (12%) lighter than the Zpacks Nero Classic 50L (330 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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