Freefloat Suspension - freefloat 360 flex panels allows for harmonized movement between you and the pack. Full U-Zip Access - full body u-zip main opening on front of bag for easy unloading. Aircushion Backpanel - padding provides true on-the-back breathability, eliminates pressure points, and has moisture-wicking cooling benefits. Item Package Weight: 21.693460799999997 pounds