Big O Leather Collection Key RingHello, arm candy! A rainbow of richly pigmented, signature colors, Jewel Tone Leather Big O Key Rings are a revolutionary mashup of fashion and function. 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.