The North Face Vault Backpack 600D polyester Imported Floating padded 15" laptop sleeve in main compartment protects laptop from bumps and falls Two mesh water bottle pockets The Flex Vent suspension system boasts compression-molded shoulder straps and a padded air-mesh back panel with a spine channel for maximum support and ventilation Reflective bike-light loop, reflective water bottle tabs and reflective shoulder strap webbing create 360 degrees of reflectivity Secondary compartment has internal organization with a secure zippered pocket, Velcro pocket and pen pockets