Diameter: 30″. Molded of high impact polyethylene. The color will not dent or peel. Rigged with black polypropylene rope terminated with hand splice. USCG Approved throwable device for all vessels. USCG Approval #160.050/120/1. Polyurethane foam buoyant material provides a minimum buoyant force of 32 lbs. SOLAS?Approved with tape.