Crazy college students back in the 70s
. Looks like it would have been fun!
SEATTLE, May 12, 1972 -- Pool Cocoon -- Students at the University of Washington went floating on an inner tube one better recently. They made their own inner tube and floated in it. The huge plastic tube was kept expanded by air forced from a blower. Black tape at the top was used to join two sheets of plastic to form the tube.