6% Chemstrand Blue C Spandex
Originally uploaded by IAAFOTS
"As Frank Gifford, in the $7 webbed belt style, says, it gives more than it gets. Jerry West wears crossed belt loop stretch, about $8. Bobby Hull is in the button tab stretch, about $6. Comfortable, tough, good-looking, and available in the colors shown on the surfboard."
Jantzen Actionwear advertisement from the May 27, 1966 issue of Life.