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ER9254 Waveless Softside Waterbed Mattress Bladder with Lumbar Support
ER9254 Waveless Softside Waterbed Mattress Bladder with Lumbar Support
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Sterling Sleep Systems
ER9254 Waveless Softside Waterbed Mattress Bladder — Parkline Series
What is a Softside Waterbed? A softside waterbed bladder sits inside a foam rail system with a slanted inner edge — giving it the look and feel of a regular mattress while delivering the therapeutic benefits of a waterbed. Unlike a hardside waterbed, a softside fits inside any standard bed frame. However, the frame must be able to support the weight of a water-filled mattress — not all standard frames are rated for this. We offer compatible wood foundations and metal bed frames for customers who need a weight-rated option.
Softside bladders are designed specifically for softside foam rail systems and are not interchangeable with hardside bladders. Dimensions shown reflect the outside measurements of the complete bed system the bladder is designed to fit — not the bladder itself.
This listing is for the bladder only.
ER9254 Specs
- Series: Parkline
- Wave Level: Waveless — moderate wave reduction; more motion than the ER9256, less than free flow. A good balance of classic waterbed feel with meaningful motion dampening.
- Construction: 20 mil blue PVC exterior; four comfort layers including one lumbar support layer and wave control fiber
- Best For: Sleepers who want noticeable wave reduction and lumbar support at an accessible price point within the Parkline softside series
Warranty — Parkline Series
3-year full replacement / 17-year pro-rated replacement. Full warranty details →
New to Softside Waterbeds?
The bladder alone is not a complete sleep system. You’ll also need a foam rail and cover system for the bladder to function properly. Our Softside Waterbed Cover System includes foam rails, a cover, and a fitted safety liner — everything except the bladder.
Recommended Accessories
- 8" Contour Safety Liner
- 8" Fitted Safety Liner (included with our softside cover systems — recommended for first-time buyers)
- Waterbed Heater Pad — Solid State 325W
- Softside Waterbed Foam Rails
- Fill & Drain Kit (R103)
- Water Mattress Conditioner (R55)
Hardside vs. Softside — What’s the Difference?
- Softside (this product): Fits any weight-rated standard bed frame, looks like a regular mattress, easier to move
- Hardside: Bladder sits inside a dedicated wooden waterbed frame, traditional look, classic wave feel
Bladder only. Foam rails, cover, heater, fill & drain kit, and conditioner sold separately.

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Great
Customer service sales was really helpful even after 3 calls and was very patient with new product help. Arrived a day early in great condition. At 73 and 5 spine surgeries was able to drain and fill alone just needed help lifting. Have had a waterbed for 45yrs- Sooo comfortable. No vendors in MA, would order online from Sterling anytime. Thank you!
Exceptional customer service!
I've been buying from Sterling Sleep Systems for many years now and have never been disappointed with Anton's attention to detail. He is always friendly, professional and goes the extra mile to find an answer to my questions and issues.
Good replacement!
This actually is more “waveless” than my prior mattress. That mattress leaked, and the liner pulled apart at a seam after 2 years! Expecting much more out of this mattress!
Love it.
I have had a waterbed for over 40 years. Mine sprung a leak and so I ordered this. The motionless factor is just right. Great bed.
Awesome Mattress
Very easy set-up and extremely comfortable.
