USB sticks have an ever growing storage capacity while getting smaller all the time. This frequently makes them hard to find and they can get lost during transportation. One solution is attaching USB sticks to other items like key chains. An additional wire or chain is used for that in most cases. Loopo uses a simple ring fastener with a spring that is integrated in the casing. This allows fast and easy attachment to all kinds of items. And the USB stick can also be removed just as easily.