The Leaf by Bellabeat is hands-down one of the coolest fitness trackers out there geared toward women. You can track your steps or activity level throughout the day, your sleep, your fertility, and it will even guide you in some really awesome breathing sessions. The best part? It's a really beautiful piece of jewelry. Even on days when you are not that interested in tracking your activity, we bet you will find yourself putting on the Leaf just because it's so darn pretty. It can be worn on your waistband, clipped on your shirt or bra strap, as a necklace, or as a bracelet on the included leather strap.