Aarn Mountain Magic 50 Pro vs Hyperlite Mountain Gear Southwest 40

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

Hyperlite Mountain Gear Southwest 40 is the lighter option — 13 g lighter than the Aarn Mountain Magic 50 Pro (2% less weight). If grams matter to you, that is the one to beat.

Spec	Aarn Mountain Magic 50 Pro	Hyperlite Mountain Gear Southwest 40
Weight	810 g · 0.810 kg · 1.79 lb	797 g · 0.797 kg · 1.76 lb
Brand	Aarn	Hyperlite Mountain Gear
Category	Backpack	Backpack

Aarn Mountain Magic 50 Pro

810 g

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

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Hyperlite Mountain Gear Southwest 40

797 g

Bombproof DCF frameless backpack built for off-trail travel. 40L capacity with roll-top closure and durable Dyneema fabric for all-weather adventures.

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Aarn Mountain Magic 50 Pro vs Hyperlite Mountain Gear Southwest 40: which should you buy?

If saving weight is your priority, the Hyperlite Mountain Gear Southwest 40 wins — at 797 g it is 13 g (2%) lighter than the Aarn Mountain Magic 50 Pro (810 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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