The benro cool walker cw 300 is a professional photo backpack for travel and active sports photographers the backpack combines a smart modern design with durable 1200d water resistant nylon fabric that delivers optimum protection for your equipment the cw 300 backpack will fit 1 dslr 4 lenses a flashgun and a 141 laptop the ergonomic harness system provides plenty of ventilation and comfort with the weight being evenly distributed across the body a rain cover is included for additional