The Duke Invitational meant just that. Twenty Four of the best "big wave" surfers of the day were summoned by "The Father of Modern Day Surfing" to the North Shore of Oahu. There they competed in the only big wave riding competition of the time. Traditionally this competition was held at Sunset Beach but could be moved to Waimea or other spots where the conditions were better. The surfers would wait on hand (often for days) until the judges decided that the surf was large enough (ideally twenty foot plus) for the competition to commence. These shirts were only given to competitors and the pride in ownership was obvious. The contest started in 1965 as the Duke Kahanamoku Invitational Surfing Championships, in 1968 the name was changed to "Duke Kahanamoku Invitational Surfing Classic." Competitors in the accompanying photo include: Felipe Pomer, the only non-American. Ben Aipa, Joey Cabell, Paul Strauch, Ricky Grigg and of course in the Blue cooler then cool jacket no other than Duke Paou Kahinu Mokoe Hulikohola Kahanamoku himself! This original size large shirt is made of bright red pineapple tweed cotton and bears the Duke Kahanamoku Label, coconut buttons and is emblazoned with Duke Kahanamoku Surfing Championships Hawaii on the right breast patch. There is a Hawaii Royal Crown patch on left pocket. There is an ink stain on the right upper arm. Sold with 13.5" x 8.5" photo in 12" x 15" frame.