I've had the Drop key ring for five years, and I finally brought it into the store, because everyone who saw it wanted to know where I got it. Sure, they're attractive and minimalistic, but they're also functional as heck. Big enough to slide onto most wrists for easy wearing (and I have very large hands), but not bulky, so they still slide easily into pockets. The adjoining piece can unscrew to either side, so you don't have to dump all your keys off to get your key to the other side. You'd be hard-pressed to have more keys than can fit on these things.