The much-loved Vault pack has a modern aesthetic, a water-repellent finish, and the ability to stand unsupported, and its 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 doesnt swing into your side when youre walking Stand-up design for easier loading and unloading Padded 15 laptop sleeve 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 hook Two water bottle pockets Daisy-chain webbing offers lash points 360-degree reflectivity Sternum strap Women-specific version available Solid: 600D polyester with non-PFC durable water-repellent (non-PFC DWR) finish Heather: 300D heathered polyester with non-PFC DWR finish Trims: plastic Laptop Sleeve: 29,2 cm x 27,9 cm Avg Weight: 770 g Volume: 27 liters Dimension/ s: 27,9 cm x 21,6 cm x 45,7 cm 100% Polyester.