Made with durable recycled nylon ripstop. Durable water-repellent finish provides enhanced protection and is free of PFC’s. Dimensions: 12″ x 7″ x 20. Laptop sleeve: 15″ x 11.5″. The updated FlexVentT suspension system increases breathability and has articulated shoulder straps, a rounded back panel and stitch lines for comfort, and soft-touch chemise fabric. 360-degree reflectivity enhances visibility. Large main compartment for books and binders. Front compartment has internal organization with secure-zip pockets and a padded tablet sleeve. Dedicated, highly protective laptop compartment fits up to 16 laptops. Two durable, external water bottle pockets can easily double as multi-use pockets with quick-draw smartphone access on one side. Two external J-zip pockets, one lined with fleece. Sternum strap with whistle buckle. Comfortable, padded top handle. Daisy-chain webbing offers lash points. Accredited by the American Chiropractic Association.