Expandable main compartment (additional 40.9L); Three exterior cargo packets; Three exterior zipper pockets; Concealable pull handles; Transparent document pocket; Adjustable grab handle can also be used for compression or as backpack strap; Lockable main compartment; Inner mesh pockets and sleeves for organization; Three interior cargo tie down straps; Three heavy-duty wheels roll smoothly over uneven terrain and steps; Expanded Volume: 8873 cu in / 145.4L; Overall Size Expanded: 37in x 15in x 16in