Granite Gear Cross-Trek 22" Wheeled Carry-On Duffel Fabric Essential 360 protection with impact-absorbing wheels, hypalon corner protection, and aircraft Aluminum pull handle with rubberized grip Trail tested load carrying techology Ventilated, load-absorbing skeletal foam shoulder straps Padded, tuck-away, load-bearing hip belt to carry up to 70% of the load Durable water-repellent zippers and extreme water-resistent front pocket zipper Repelaweave &amp; Repelagrid Fabrics For Maximum Protection Against Elements Rugged Wheels With Impact-Absorbing Wheel Housing And Bumper Fortification Hypalon Corner Protection And Kick Plate Durable Aircraft Aluminum Pull Handle With Rubberized Grip Ventilated, Load-Absorbing Skeletal Foam Shoulder Straps Padded, Tuck-away, Load Bearing Hip Belt To Carry Up To 70% Of The Load Load Stabilizing Sternum Strap Adjustable Load Lifter Straps To Transport Weight Over The Center Of Gravity Durable Water-Repellent Zippers and Extreme Water-Resistent Front Pocket Zipper Padded Comfort Grab Handles For Easy Lifting Heavy Duty Compression Straps For Zipper And Seam Stress Release Zippered Divider Curtain For Packing Versatility Expandable Drop-bottom Compartment For 15% Additional Packing Space