This power bank is in the shape of a candy cube with 2800mAh charging capacity. You can carry them anywhere very conveniently in your backpacks or pockets. Their body is made of acrylonitrile butadiene styrene (abs) plastic material and they have a Li-ion polymer battery fixed inside. There is a USB cable along with this power bank for easy charging. These products allow you to use your phones without having to bother about the battery. They are the best addition for devices of all types of brand.