We've all been there - waiting in line at the Selena Gomez concert, ready to take some killer Instagram videos, but you realize you used up all your battery on pre-concert Snapchat selfies! (No? Just us?) In any case, it certainly can't hurt to have this handy-dandy portable charger with you. Roughly the size of your wallet, this brilliant blue life-saver fits perfectly in your pocket, purse or fanny pack!