There are several types of waterbed frames: hardside waterbeds, soft side waterbeds, and tube water mattresses. But regardless of what type of waterbed you might be interested in, they all offer the same benefits that have helped to make sleeping on water a more and more popular choice.
The other common type of waterbed is the tube water mattress. These are technically not water beds, as tube water mattresses are thinner than actual water beds, and are meant to be laid on top of a foam or spring mattress. The thinner water layer means that these tube water mattresses are much lighter than either soft side or hard side waterbeds. However, this also means that some of the benefits of sleeping on a waterbed is lost, sort of defeating the purpose.