absolutely love this! It’s my first power bank and I’m already wondering how I got by without one, there have been many a hair raising time when battery power on my phone has been so low it’s bought me out into a cold sweat!! Granted it’s by no means tiny but I keep this in my laptop bag and you should only worry about the size or weight if you’re going to be carting it about in your pockets, which I doubt many people would. It was excellent value for money, I’ve managed to get two full iPad and two iPhone charges out of it before it needed charging again. If speed of charging matters to you then I concede it’s not exactly lightening quick but it’s perfect for my non-urgent needs. Great value, well made and I’d definitely buy one again.