REI Co-op Flash Air 50 vs Superior Wilderness Designs Long Haul 50
Weight and specs compared for 2026 — and which one to choose.
Ultralight 50L pack with 3D contoured hip belt and ventilated back panel. Made from PFAS-free UHMWPE fabric with DWR coating.
Durable 50L internal-frame ultralight pack with dual aluminium stays, built for heavier multi-day loads on rugged terrain.
Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.
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REI Co-op Flash Air 50 vs Superior Wilderness Designs Long Haul 50: which should you buy?
The listed weights alone are not enough to choose between these products. Confirm the size, included parts and weight basis against each source; choose equipment for the function and fit you need.
See where both rank against everything else in this category on the lightest backpack page, or browse the full gear weight database.