Fits perfect in a pocket, backpack, purse, etc. My wife loves having a sleek and stylish battery to keep her iphone charged all day. It's nice to be on vacation, or a "staycation" at Disneyland and not have to make the whole trip come to a screeching halt having to charge mobile devices. With the iTorch we were able to keep moving without having to be tethered to an electrical outlet and waiting for phones to charge. The flashlight and laser pointer come in handy as well. Got a lot of jealous looks from other tourists wishing they had one to charge their phones.