The much-loved Vault pack has a modern aesthetic, a water-repellent finish and the ability to stand unsupported, and it's endorsed by the American Chiropractic Association. Our FlexVent 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. External daisy chains for added lash points. 360-degree reflectivity. Sternum strap. Women-specific version available. 100% Recycled polyester.