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Osprey Exos 38 vs REI Co-op Flash 45
Weight and specs compared for 2026 — and which one to choose.
Both weigh the same at 1,190 g, so choose on features, price and fit.
Osprey Exos 38
1,190 g
Ultralight ventilated multi-day pack with AirSpeed suspended mesh backpanel and removable top lid for fast-and-light backpacking.
Check price Full details →Osprey Exos 38 vs REI Co-op Flash 45: which should you buy?
On weight these two are identical (1,190 g), so your decision comes down to features, fit and price. Check the full details and current price for each above.
See where both rank against everything else in this category on the lightest backpack page, or browse the full gear weight database.