Charlie Hall invented the waterbed in 1968.
According to Business Insider he started what became a $2 billion industry.
The water-filled mattress earned a provocative reputation throughout its heyday in the '70s and '80s.
Hall intended for waterbeds to help people get better sleep.
Research on the health benefits have been inconclusive.
Hall's new company, Hall Flotation, aims to bring waterbeds back by emphasizing the comfort of a "wave-suppression system."