400SX Super Waveless Waterbed Mattress with Back Support, for Hardside Frames

Bliss again

I had been without my 30+ year old waterbed for several months (long story) and am so happy to have another Sterling waterbed to sleep on. I'm in heaven again.

Most Incredible Sleep

We are super happy with our new 400SX Super Waveless, Back Support, Hardside Waterbed Mattress. We have had Sterling mattresses over the past 30 years, but this one is the absolute best so far. The back support is amazing. The customer serve at Sterling Sleep Systems is superb. The advice, regarding mattress care was very valuable. We can highly recommend the 400SX Super Waveless, Back Support, Hardside Waterbed Mattress.

Most comfortable Mattress we’ve slept on

This is the most comfortable mattress my wife and I have ever slept on. We even recommended the 400SX to my brother who also loves it. We recently had to replace our first one, due to a seam giving out at the filler port after about 8 years, but we didn’t hesitate purchasing another due to the quality of sleep we experience. It’s supper comfortable with very little waves. We rarely notice if the other gets into or out of bed during the night. Both of us highly recommend the Sterling 400SX