Decathlon Forclaz MT900 UL 50+10L vs ULA Catalyst
Weight and specs compared for 2026 — and which one to choose.
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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Decathlon Forclaz MT900 UL 50+10L vs ULA Catalyst: which should you buy?
If saving weight is your priority, the ULA Catalyst wins — at 850 g it is 465 g (35%) 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.