The KeySmart Flex key holder is lightest Keysmart and the perfect pocket organiser. A Sleek and minimalistic flexible Swiss army style key holder which holds up to 8 Keys (or more with expansion pack); this device is amazing. You can say goodbye to shredded pockets, unsightly bulges, and jingling with a wide variety of accessories. Accepts existing keys so no need to buy expensive branded key blanks. Includes loop so large car keys can be attached to the end. USB storage can be added which uses two key spots and loop piece uses one slot.