If you're going out into the field for an extended time, you'll need a bag with this much carry room to get you there. And because it's on wheels, you won't be straining your back to get all your gear there. Huge center compartment and padded top-end compartment. Two full-length zippered side compartments - one is conveniently divided in half, the other offers generous storage. All compartments have lockable zippers. Internal tie downs in large center compartment keep your gear secured. Radiused urethane wheels provide maneuverability and easy transport, even with the heaviest loads. Polymer "pull" handle with metal legs collapses completely into molded recess for travel. Dimensions: Center compartment is: 13.5" w x 27.5" h x 14" d (343 x 699 x 356mm). Top-end compartment is: 13.5" w x 13.5" h x 2" d (343 x 343 x 51mm).