Free Flow Full Motion Hardside Waterbed. Receive all the benefits of sleeping on water and have a free flowing water mattress that lets you fully enjoy the motion of the ocean. A Free-Flow waterbed offers all the health and wellbeing benefits that people report when sleeping on water as well as allowing you to experience the full wave effect of a waterbed mattress. People who switch to a waterbed tend to report improved quality of rest and report waking feeling refreshed, rejuvenated and more energetic than ever. No longer is a hardside waterbed just a joke leftover from the 70s. The mattresses are better designed than ever. The vinyl construction is more secure than ever and fill kits make these mattresses easier to fill and drain than ever. Requiring no more maintenance than the occasional bottle of water conditioner, a hardside, free-flow waterbed is a great and affordable way to bring the many benefits of Sleeping on Water into you bedroom. Warranty terms: 20-year manufacturerÕs warranty.