Waterbed Softside Mattress Systems

Softside Waterbed Systems — Sterling Sleep Systems

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. Sterling Sleep Systems has been handcrafting softside waterbed systems in the USA since 1987.

Complete Systems

New to waterbeds? Start with a complete cover system or the all-in-one HydroMattress kit. Everything you need arrives together.

Bladders

Already have a cover system? Choose from our ER-series deep fill (8") softside bladders, available in free-flow through super waveless. Compatible with ER400, ER600, ER9254, and ER9256 configurations.

Important: Bed Frame & Foundation Requirements

Waterbeds are significantly heavier than conventional mattresses and require a frame or foundation specifically designed to support the weight. Most standard bed frames are not rated for waterbed use. We carry wood waterbed foundations designed specifically for our softside systems. Please contact us before ordering to confirm your frame or foundation is compatible — we’re happy to help.

Accessories

Keep your waterbed performing at its best with heaters, safety liners, conditioner, fill kits, and foam rails — all available below.

15 products