O Venture Silicone Big O Key Ring Pretty Please Boutique & Gifts Thanks, Mail Carrier Hands Free Convenience, Style and Versatility O VENTURE Big O Key Ring Gold Rush O VENTURE Big O Key Ring Gold Rush. Hello, arm candy! A rainbow of richly pigmented, signature colors, Jewel Tone Leather Big O Key Rings are a revolutionary mashup of fashion and function. From textured, embossed varieties to classic, smooth leathers with contrasting trim, the Jewel Tone Big Os are designed to free your hands and make less look luxe. Genuine leather circle key ring 4 inch diameter Oversized bracelet key ring fits over your wrist or above your elbow Signature locking clasp secures keys with a click The original, patented O key ring design