How to Choose a Backpack

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Inspired by thru-hikers across North America, the men's Flash Air 50 pack offers comfort and durability, Packmod compatibility, and lid adjustment. Made to go the distance in miles and generations.
Shop newer versionImported.
View the REI Co-op Flash Product LineView all REI Co-op Backpacking PacksBest Use | Backpacking |
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Frame Type | Internal Frame |
Ultralight | Yes |
Material(s) | Main shell: 87% recycled nylon, 13% poly arylate Vectran; Bottom panel, back panel, hipbelt, shoulder straps: 100% ripstop nylon |
Frame Material | Steel |
Reservoir Compatible | Yes |
Pack Access | Top |
Number of Exterior Pockets | 9 + main compartment |
Hipbelt Pockets | Yes |
Gender | Men's |
Sustainability | Contains materials that meet the bluesign® criteria Contains recycled materials From a Climate Label Certified brand |
From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.