for SOFTSIDE waterbeds

Replacement Softside Waterbed Mattresses

Upgrade or replace your softside waterbed mattress with our range of motion-stabilized vinyl bladders. Designed to fit sloped foam shoulders, our mattresses deliver deep pressure relief, spine alignment, and compatibility with standard UK bedding.

Wave Stabilization Options

• Free Flow(ST000): Traditional full movement and maximum floatation.
• Semi-Stabilized (ST2500): Layered fibre settles motion within 9 to 10 seconds.
• Stable (ST3500): Fibre layers help stabilize the movement within 5-6 seconds.
• Super Stable(ST4500): Stabilizes within 2-3 seconds
• Extra Super Stable(ST5500): Most stable mattress with movement reduced to 1-2 seconds.
• Dual Systems: Twin bladders allow partners to personalize firmness and temperature and have the stability of there choice.

Frequently Asked Questions

Do softside mattresses fit standard UK bed frames?
Yes. They are standard UK sizes (Double, King, Super King), allowing you to use regular fitted sheets too.

Do I need a new safety liner?
It depends on your liners age. We would recommend you replace it at the same time as the mattress. As the mattress is already empty.

How do I maintain my softside mattress?
Add one bottle of waterbed conditioner once a year to keep the vinyl soft and prevent algae growth.