Extra Firm waveless waterbed mattress when properly filled to the top of the side rails. Motion is almost non-existent. The Dual Mattresses allow two different heat ranges and some adjustment in firmness by varrying the amount of water.

The Textured TOP Sleep Surface has a special low tension molded top that reduces surface pressure between your skin and the mattress surface. This creates an abundance of mattress surface area, allowing your body weight to disperse across the mattress better, without raising the water level.