These appear to be "Corfam" . . . from Dictionary.com -- Corfam is a brand of synthetic flexible, microporous material, used as a leather substitute for shoes, handbags, belts, luggage, etc.

And from Wikipedia --

Corfam was the centerpiece of the DuPont pavilion at the 1964 New York World's Fair in New York City. Its major advantages over natural leather were its durability and its high gloss finish that could be easily cleaned with a damp cloth. Its disadvantages were its stiffness which did not lessen with wearing, its relative lack of breathability, and easy confusion with non-breathable cheaper products. DuPont manufactured Corfam at its plant in Old Hickory, Tennessee, from 1964 to 1971. After spending millions of dollars marketing the product to shoe manufacturers, DuPont withdrew Corfam from the market in 1971 and sold the rights to a company in Poland.

Jeff

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: What strap(s)are these Heuers wearing?