Graffiti Utility Backpack by Sprayground by Sprayground
The G.U.B Hawk Backpack is the next generation in graffiti accessory technology. Constructed with individual angled canister slots, adding ease of use and and organization to the taggers day to day bombing. With additional storage on both the front and side panels, The Graffiti Utility Backpack has become a taggers best friend. (Fits laptop, sketchbook, markers, nozzles)
You can buy one from here.