This vibrant and fun YELLOW Leather Big O® Key Ring will be the life of your arm party. Never used so ready for you. The Original Big O Key Ring is a one-size-fits-all bracelet key ring that can be worn on your forearm or above your elbow for hands-free ease. The patented, signature locking clasp clicks open and closed so you can contain your house keys, car keys, card case and more in one central, secure location. Oversized 4in diameter will fit any arm!!