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Gossamer Gear Mirage 40 vs Hyperlite Mountain Gear Southwest 40L

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

Gossamer Gear Mirage 40 is the lighter option — 246 g lighter than the Hyperlite Mountain Gear Southwest 40L (31% less weight). If grams matter to you, that is the one to beat.
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Spec Gossamer Gear Mirage 40 Hyperlite Mountain Gear Southwest 40L
Weight 550 g · 0.550 kg · 1.21 lb 796 g · 0.796 kg · 1.75 lb
Brand Gossamer Gear Hyperlite Mountain Gear
Category Backpack Backpack
Gossamer Gear Mirage 40
550 g

40L frameless ultralight pack crafted from ALUULA Graflyte fabric, one of the lightest full-featured backpacks available in 2026.

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Hyperlite Mountain Gear Southwest 40L
796 g

Ultralight 40L pack in Dyneema Composite Fabric with roll-top closure, hip belt pockets, and a structured back panel for comfort on demanding trails.

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Gossamer Gear Mirage 40 vs Hyperlite Mountain Gear Southwest 40L: which should you buy?

If saving weight is your priority, the Gossamer Gear Mirage 40 wins — at 550 g it is 246 g (31%) lighter than the Hyperlite Mountain Gear Southwest 40L (796 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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