600D polyester, 1200D polyester, 450D x 300D heather polyester, 600D geo emboss polyester. The FlexVent™ suspension system boasts custom injection-molded shoulder straps and a padded mesh back panel with a spine channel for maximum support and ventilation. Floating padded laptop sleeve in main compartment. Secondary compartment has interior organization with a secure zippered pocket, Velcro® pocket and pen pockets. Reflective bike-light loop, reflective water bottle tabs and reflective shoulder strap webbing create 360-degrees of reflectivity. Two mesh water bottle pockets. Comfortable, padded top haul handle. Sternum strap with whistle buckle. Laptop sleeve: 11.75"h x 12.25"d. Dimensions: 19.3"h x 12.25"w x 7.5"d.
