Sun and Sand in '65

I'm posting this one just for fun; I got a kick out of the time-travel feeling back to the days of surfer bangs and early bell-bottoms - and also because I was delighted to be reminded of this happy little tune that ought to put a smile on anyone's face.  It's covered by the T-Bones here, but it was already well-known as the theme of a famous advertisement.

Can you remember which TV commercial this was from?  Think about it a second, fellas, and then you can check your answer here.