• HydroMattress- Dual Waterbed Mattress - Sterling Sleep Systems
  • HydroMattress- Dual Waterbed Mattress - Sterling Sleep Systems
  • HydroMattress- Dual Waterbed Mattress - Sterling Sleep Systems
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HydroMattress — Complete Softside Dual Waterbed Kit

HydroMattress — Complete Softside Dual Waterbed Kit

$2,819.99 USD
$2,819.99 USD
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Sterling Sleep Systems

HydroMattress™ — The Complete Softside Waterbed Kit

The HydroMattress is our all-in-one softside waterbed solution — everything you need arrives together, so you can set up and sleep without hunting for separate parts. Unlike our other softside cover systems (where the bladder is sold separately), the HydroMattress comes as a complete kit with most accessories included.

What's Included

  • HydroMattress™ with Plush Top Cover
  • ER600 Dual Waterbed Bladder (Single bladder in Queen size)
  • Safety Liner
  • 4 Foam Rails
  • Foam Divider (King sizes only)
  • 2 Waterbed Heaters (1 in Queen size)
  • Fill Kit with Water Conditioner

What is a Softside Waterbed?

A softside waterbed fits inside any standard bed frame — no dedicated wooden frame required. It looks like a conventional mattress but delivers the therapeutic, pressure-relieving benefits of water support. The dual bladder design lets each sleeper adjust their side independently for personalized comfort.

Softside vs. Hardside — What's the Difference?

  • Softside (this product): Foam-encased, fits any standard frame, looks like a regular mattress, easier to move and set up
  • Hardside: Requires a dedicated wooden waterbed frame, traditional waterbed look, bladder sits directly inside the frame

Why HydroMattress?

  • Complete kit — no separate bladder or heater order needed
  • Dual water chambers for individualized comfort per sleeper
  • Eco-friendly, made in the USA since 1987
  • Plush Top cover is replaceable and upgradeable

*Bed frame and foundation not included.

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Frequently Asked Questions

Does this include the waterbed bladder?

No — this is the cover system only. You'll need to order a compatible softside bladder separately (ER400, ER600, ER9254, or ER9256). Other bladders are not compatible with this cover system.

What's the difference between the Plush Top, Pillowtop, and Euro Top?

All three use the same border panel, foam rails, and safety liner — the only difference is the quilted top. The Plush Top is a classic soft surface. The Pillowtop adds an extra cushioning layer for deeper pressure relief. The Euro Top adds a 3-inch compartment for interchangeable latex comfort layers, letting each sleeper choose their own firmness.

Can I upgrade my cover top later?

Yes! All Sterling softside covers are interchangeable. Start with a Plush Top and upgrade to a Pillowtop or Euro Top anytime — just order the replacement cover. You never have to replace the entire system.

What sizes are available?

The cover system is available in California King (72 x 84 inches) and Eastern King (76 x 80 inches). Full size is available by special order only — contact us for a quote.

Do I need a special bed frame?

No dedicated waterbed frame is required. A softside waterbed fits inside any standard bed frame. We recommend our heavy-duty metal bed frame for best results. Foundations are available but must be quoted separately due to shipping costs — contact us before ordering.

How many heaters do I need?

One heater per bladder. If you have a dual bladder setup (two separate bladders), you will need two heaters — one for each side.