Description
ER400 Super Waveless Softside Waterbed Mattress — S-Class Series
The ER400 is a bladder only — a cover system is required to complete your softside waterbed setup. Choose from our Plush Top, Pillowtop, or Euro Top cover systems, sold separately.
ER400 Specs
- Series: S-Class
- Fill: Deep Fill — 8"
- Wave Level: Super Waveless — 2nd most waveless softside bladder
- Key Features: Three lumbar support layers, four full-size 1.5 oz. fiber layers, tethered wave control
- Best For: Sleepers who want superior back support and near-zero motion transfer
Warranty — S-Class Series
Covers seam and valve related leaks from date of purchase:
- Years 1–5: Full replacement (excluding shipping)
- Lifetime: Pro-rated/discounted replacement (excluding shipping)
What Makes the ER400 Special
Three layers of lumbar support cradle the natural curvature of your spine to eliminate sleep-related back pain. Four full-size 1.5 oz. fiber layers envelop the water bladder for structure, stability, and dreamy comfort. Unlike foam or spring mattresses, a waterbed never loses its support over time — the comfort you feel night one is the same you’ll feel 15 years later.
Recommended Accessories
*Cover system, heater, fill & drain kit, and conditioner sold separately.
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