Gossamer Gear Mirage 40 vs Hyperlite Mountain Gear Aero 28 Ultralight Fastpack
Weight and specs compared for 2026 — and which one to choose.
40L frameless ultralight pack crafted from ALUULA Graflyte fabric, one of the lightest full-featured backpacks available in 2026.
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 40 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 44 g (8%) lighter than the Gossamer Gear Mirage 40 (550 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.