The benro cool walker zoom bag z30 is a stylish shoulder bag suited to photographers who shoot with the bare minimum such as a dslr with battery grip and zoom lens attached 24 70mm f28 this holster style bag is constructed out of water resistant nylon fabric to ensure optimum protection for your gear and provides quick and easy access at all times in addition to housing a dslr with lens setup the zoom z30 also provides space for small accessories and personal items in the zippered compart