Anker is a company that knows and understands power banks and power solutions. The Astro Slim2 is a great example of Anker’s work and ability to help you with your power needs throughout the day. This power bank is a very smart not only in design, but also in function. The integrated Micro USB cable is an extremely nice touch, as it helps keep annoying wires out of the way when recharging devices (namely your phone). The dual recharging ports are a great added feature for those who may carry around two phones, such as myself, or those who want to help a friend out in need.