Our classic Jester pack has a padded laptop sleeve, simplified organization, and it can stand up completely unsupported. It&';s also endorsed by the American Chiropractic Association. Our FlexVent(TM) suspension system, certified by the American Chiropractic Association, features a flexible yoke built from custom injection-molded shoulder straps; an unbelievably comfortable, padded back panel; and a highly breathable lumbar panel Two webbing top handles make it convenient to open and provide a balanced carry so it doesn&';t swing into your side when you&';re walking Pack stands on its own for easy loading and unloading Padded 15&';&'; laptop sleeve helps protect laptop from bumps and falls Huge main compartment holds books and binders for a day on campus Front compartment simplifies organization for the modern user while maintaining essential features for storage such as secure-zip pockets, a tablet sleeve and a key clip Two external water bottle pockets Stylish front bungee system for additional storage 360-degree reflectivity Sternum strap solid and print: 600D recycled polyester with non-PFC durable water-repellent (non-PFC DWR) finishSizes: One sizeheather: 300D heathered polyester with non-PFC DWR finishAvg Weight: 1 lb 10 oz (740 g)trims: recycled plasticDimensions: 11&';&'; x 8.25&';&'; x 18.13&';&'; (27.9 cm x 21 cm x 46.1 cm)Volume: 1709 in^3 (28 liters)Laptop Sleeve: 12.75&';&'; x 11&';&'; (32.4 cm x 27.9 cm)