Osprey Atmos 65 vs REI Flash 65 — AT Thru-Hiker Comparison

Osprey Atmos 65 vs REI Flash 65 for AT thru-hiking — a head-to-head comparison after testing both on a 5-day section hike through the Smokies.

Trail tested on: Roan Highlands, TN/NC Border

Quick verdict

Comfort pick: Atmos 65. Weight pick: Flash 65. For a thru-hike, we'd take the Atmos.

We carried both packs on the same 5-day route through the Roan Highlands. Here's how they compare on comfort, weight, and durability.