backpack trinity traveler Premium Fully removable backpack straps included shoulder strap SONGSTER Accessory / Diaper Bag

It looks and feels like a regular backpack

The signature tech is the Response A3 auto-angle hip belt a pivoting hip belt that rotates with your gait rather than staying rigid, which reduces the hip-spot fatigue you get on longer days

The Cosmic compresses down to the size of a bowling ball, which is impressive, and it weighs in under three pounds

Ultimately, I returned all of the backpacks from Zappos and ended up instead at The Outdoor Gear Exchange in Burlington, Vermont where I walked around the store with padded-out and weighted-down backpacks of varying sizes to see how they felt this is a step I really recommend not skipping

Verdict Its inevitably bulky and heavy even for an armored bag, but Deuter has done a great job of shrinking the Attack 20 in terms of how it feels on your back