Modular Bag System by Peak Design, customise the internal carry options to match your requirements ^^ Meets international max carry-on standards in default 35L configuration. Dual expansion zips give 10L extra volume for 45L max storage. ^^ Dual side zippers for instant camera and item access. Full rear access via large dual zips. ^^ Quick tablet and laptop access using the main back zip. ^^ Packing Tools, Camera Cubes, Tech Pouch and Wash Kit compliment the Travel Line Backpack and are available separately.