GO-TO CLASSIC: With a 31-liter volume, the Surge has more than enough room to accommodate your office essentials. It also has three large, easy-to-access zippered pockets on the front and a coveted endorsement from the American Chiropractic Association. CHIROPRACTOR APPROVED: The FlexVent suspension system, certified by the American Chiropractic Association, features a flexible yoke built from custom injection-molded and shoulder straps, a padded mesh back and a lumbar panel for ventilated support. SMART ORGANIZATION: This pack features a large main compartment for books and binders, a protective padded laptop sleeve, and a stand-up design to keep items securely inside. Also includes an external secure-zip pocket and two stretch mesh side pockets. COMFORTABLE CARRY: For everyday use, commuting or travel, this pack has a padded top handle and a removable waist belt for a custom fit. A sternum strap adds extra support, while a whistle buckle and reflective details improve safety and visibility. TECH SPECS: Dimensions: 12" x 7" x 20" (30.5 cm x 17.8 cm x 50.8 cm); Laptop Sleeve: 15" x 11.5"; Avg Weight: 2 lbs 12 oz; Volume: 31 Liters. This item is not intended for use by children 12 and under.