Gregory Baltoro 75 vs Hyperlite Mountain Gear Aero 28
Weight and specs compared for 2026 — and which one to choose.
Workhorse 75L pack for extended expeditions and heavy loads.
Full details →Ultralight 28L fastpack with vest-strap harness. Perfect for fast-and-light adventures and trail running.
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Gregory Baltoro 75 vs Hyperlite Mountain Gear Aero 28: which should you buy?
If saving weight is your priority, the Hyperlite Mountain Gear Aero 28 wins — at 536 g it is 1,824 g (77%) lighter than the Gregory Baltoro 75 (2,360 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.