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Decathlon Forclaz MT900 UL 50+10L vs Zpacks Nero Classic 40L

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

Zpacks Nero Classic 40L is the lighter option — 1,026 g lighter than the Decathlon Forclaz MT900 UL 50+10L (78% less weight). If grams matter to you, that is the one to beat.
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Spec Decathlon Forclaz MT900 UL 50+10L Zpacks Nero Classic 40L
Weight 1,315 g · 1.315 kg · 2.90 lb 289 g · 0.289 kg · 0.64 lb
Brand Decathlon Zpacks
Category Backpack Backpack
Decathlon Forclaz MT900 UL 50+10L
1,315 g

Affordable ultralight backpacking pack with 50L capacity plus 10L extension collar. Highly functional load lifters and large front pockets. Budget-friendly entr...

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Zpacks Nero Classic 40L
289 g

Frameless ultralight pack in 30L or 40L, built from Dyneema CF fabric. One of the lightest load-carrying packs available for thru-hiking.

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Decathlon Forclaz MT900 UL 50+10L vs Zpacks Nero Classic 40L: which should you buy?

If saving weight is your priority, the Zpacks Nero Classic 40L wins — at 289 g it is 1,026 g (78%) lighter than the Decathlon Forclaz MT900 UL 50+10L (1,315 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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