The Think Tank Photo StreetWalker HardDrive offers you a strong, functional and convenient way to carry around your photo gear and 15" laptop. The pack is rated to hold your 70-200mm f/2.8 lens with its lens hood attached as well as an additional four extra lenses plus flash. In addition, your 15" laptop fits neatly in its own separate padded compartment. For the outdoor shooter, your tri/monopod will fit in the pack's bottom front compartment. If your tripod is larger, the bag has a pop out cup that will hold the feet while the head is secured with the included straps. Accessories are carried in a variety of pockets. First, there's an upper organizer pocket for pens, cards and various ID like a passport. However, there are also zippered side pockets on each side that contain additional airline stretch pockets for water bottles or quick access items. Access to the entire bag is done via strong YKK zippers that will accept a user-supplied lock. For comfort, the harness is contoured and adjustable and contains stretch pockets for items like cleaning cloths, compass or memory cards. The back of the pack has a breathable mesh liner for staying cool while out and about. The waist belt is removable and provides stability along with the sternum strap that holds the pack securely in place while walking. Under the top grab handle you'll find a business card holder that will eliminate the need to remove the entire pack to give someone your comp card. The pack will accept an optional Thin Skin Belt, Pro Speed Belt or Steroid Belt. It will also accommodate an optional Camera Support Strap. Finally, for maximum protection from weather, a handy rain cover is included. The StreetWalker HardDrive is supported by Think Tank's lifetime warranty against manufacturer's defects.