Gossamer Gear Mirage 40L Pack ALUULA vs Hyperlite Mountain Gear Aero 28 Ultralight Fastpack
Weight and specs compared for 2026 — and which one to choose.
Lightest framed 40L backpack, 19.4oz, ALUULA Graflyte V52 ultra-lightweight fabric
Full details →Ultralight fastpacking pack with 28L capacity + 8.5L external storage. Dyneema Composite Hybrid construction, vest-style harness, removable hip belt.
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Gossamer Gear Mirage 40L Pack ALUULA vs Hyperlite Mountain Gear Aero 28 Ultralight Fastpack: which should you buy?
If saving weight is your priority, the Hyperlite Mountain Gear Aero 28 Ultralight Fastpack wins — at 506 g it is 43 g (8%) lighter than the Gossamer Gear Mirage 40L Pack ALUULA (549 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.