EUC! Designed to sit at the lumbar part of your back keeping a low center of gravity. Exterior: 13.5”L x 9.5”W x 7”D. Hard shell side compartments: 9.25” x 4.25”x 1.5” Interior: 13”L x 8.8”W x 5”D Total Capacity: 9.4L Water repellent coated for superior water resistance Adjustable Waist straps Adjustable Padded strap length: 24” Padded back for comfort