WORLD WAR II US Navy Cracker Jack Wool Uniform Cap Sailor Hat Size 6 1/2. ***Note: the hat size is based on converting the circumference, 20 1/2 in to the size obtained from a chart. Measurements and other lettering have faded due to age. Pre-owned.fair condition based on faded lettering. Please see photos of actual items and ask any questions you may have prior to purchase. Ships USPS/UPS. International sales ship using ebay's international shipping. Thanks for looking.