Make a promotional impression that’s anything but slim during the next campaign by handing out the Madison 4000 mAh slim power bank. Measuring 4.32″ x 2.6″ x 0.38″ and available in several colors, this UL-certified product features a battery usage LED display and comes with a USB charging cable, a user menu and a black gift box. Ideal for charging phones and tablets on the go, it can be customized with a brand logo for maximum corporate exposure in a memorable giveaway.