Large enough to hold everything you need for a two-day trip, yet fits easily under most airplane seats. Roomy main compartment has a multitude of pockets, including a padded iPad®/tablet sleeve, zip water bottle pouch, and 3-1-1 pocket. Sturdy telescoping handle and smooth-rolling wheels let you maneuver easily, even down narrow airplane aisles. Two-Wheel is ultra-lightweight for easy lifting. Four-Wheel glides effortlessly with 360° spinning wheels. Two Wheel: 1800 cu. in; 15" x 14 ¾" x 7 ½"; 6 ¾ lbs. Four-Wheel: 1800 cu. in; 15" x 14 ¾" x 8 ½"; 8 lbs.