Light and streamlined, the Osprey Atmos AG LT 50L Pack keeps us moving quick on multi-day backcountry ventures. Osprey's AG system seamlessly integrates the hip belt with the tensioned back panel and the peripheral frame to give us optimal load transfer and a made-for-us fit, while the spacer mesh and die-cut foam ensure a breezy, comfy carry. The side zip access lets us grab layers or snacks buried inside without needing to unclip the floating lid, while the integrated rain cover unfurls in a cinch when the weather turns.