← All gear comparisons

Aarn Mountain Magic 50 Pro vs Zpacks Arc Haul Ultra 50L

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

Zpacks Arc Haul Ultra 50L is the lighter option — 454 g lighter than the Aarn Mountain Magic 50 Pro (43% less weight). If grams matter to you, that is the one to beat.
shopping_cart Check today's price on Amazon
Spec Aarn Mountain Magic 50 Pro Zpacks Arc Haul Ultra 50L
Weight 1,060 g · 1.060 kg · 2.34 lb
medium back (short back: 1000 g), excl. balance pockets (256 g)
 606 g · 0.606 kg · 1.34 lb
as listed; page does not state size (belt and straps included)
Brand Aarn Zpacks
Category Backpack Backpack
Aarn Mountain Magic 50 Pro
1,060 g

Body-balance 50L pack in 70D Robic Gridstop UHMWPE with U-Flow harness and removable front balance pockets for comfort.

See it in your base weight → Full details →
Zpacks Arc Haul Ultra 50L
606 g

Ultralight thru-hiking pack with carbon fiber frame and Dyneema Composite Hybrid fabric. Features roll-top closure and adjustable torso fit.

See it in your base weight → Full details →

Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.

HikeLoad is reader-supported. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Learn more.

Aarn Mountain Magic 50 Pro vs Zpacks Arc Haul Ultra 50L: which should you buy?

If saving weight is your priority, the Zpacks Arc Haul Ultra 50L wins — at 606 g it is 454 g (43%) lighter than the Aarn Mountain Magic 50 Pro (1,060 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.

More backpack comparisons

Aarn Mountain Magic 50 Pro vs Osprey Exos Pro 55 Aarn Mountain Magic 50 Pro vs Gossamer Gear Mariposa 60L Backpack Aarn Mountain Magic 50 Pro vs Granite Gear Crown2 60 Aarn Mountain Magic 50 Pro vs ULA Equipment Ultra Circuit Aarn Mountain Magic 50 Pro vs Granite Gear Crown3 60 Aarn Mountain Magic 50 Pro vs Aarn Featherlite Freedom Pack (Medium)