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Hyperlite Mountain Gear Pemi 15 Running Vest vs Osprey Atmos AG 65

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

Hyperlite Mountain Gear Pemi 15 Running Vest is the lighter option — 1,829 g lighter than the Osprey Atmos AG 65 (84% less weight). If grams matter to you, that is the one to beat.
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Spec Hyperlite Mountain Gear Pemi 15 Running Vest Osprey Atmos AG 65
Weight 351 g · 0.351 kg · 0.77 lb 2,180 g · 2.180 kg · 4.81 lb
Brand Hyperlite Mountain Gear Osprey
Category Backpack Backpack
Hyperlite Mountain Gear Pemi 15 Running Vest
351 g

Running vest using ALUULA Graflyte fabric for ultralight trail runners.

Full details →
Osprey Atmos AG 65
2,180 g

Full-featured 65L pack with Anti-Gravity suspension. Ideal for extended trips.

Full details →

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Hyperlite Mountain Gear Pemi 15 Running Vest vs Osprey Atmos AG 65: which should you buy?

If saving weight is your priority, the Hyperlite Mountain Gear Pemi 15 Running Vest wins — at 351 g it is 1,829 g (84%) lighter than the Osprey Atmos AG 65 (2,180 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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