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Sterling Imperial Hybrid Mattress — Pocket Coil + Latex or Memory Foam
Sterling Imperial Hybrid Mattress — Pocket Coil + Latex or Memory Foam
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Sterling Sleep Systems
Premium Hybrid Mattress — Handcrafted in the USA Since 1987
The Sterling Imperial is a luxury hybrid mattress built for sleepers who refuse to compromise. A foam-encased pocket coil core delivers targeted support and near-zero motion transfer — so you and your partner sleep undisturbed. Choose your comfort top to dial in the perfect feel.
Material Specs
- Core: Foam-encased individually wrapped pocket coils — superior edge support, reduced motion transfer
- Plush Top: Soft, cloud-like feel — ideal for side sleepers
- Pillow Top: Extra-plush cushioning layer for deep pressure relief
- Euro-Top (3"): Split-firmness design — customize each side independently
- Euro-Top Fill Options: Soft Talalay Latex (18–22 ILD) | Firm Talalay Latex (29–32 ILD) | Soft Memory Foam | Firm Memory Foam
Why Sterling Imperial?
- Manufactured in the USA — 35+ years of sleep expertise
- Breathable open-cell construction keeps you sleeping cool
- Removable, washable comfort covers for lasting hygiene
- Trusted by luxury hotels, resorts, and healthcare facilities nationwide
- A premium alternative to Purple, Tempur-Pedic, and Sleep Number — with full customization
Bed Frame & Foundation Requirements
The Sterling Imperial is compatible with slatted bed frames, however our warranty requires the mattress to be fully supported on a flat, firm surface. If using a slatted frame, we strongly recommend placing a sheet of plywood or a bunkie board over the slats to fill the gaps and provide even support. Our wood foundations are an excellent alternative if modifying your existing frame isn’t possible — contact us for details.

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.
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New Sterling Mattress
Mattress is so comfortable and well made … happy to have purchased it
Sterling Imperial Pocket Coil Pillowtop
Fabulous mattress my wife and I enjoy very much after using for a couple of months. Great customer service, delivery and removal of old mattress. Definitely recommend
Happy we got our new Sterling!
We are very happy with our new mattress! We have been enjoying the Sterling mattress in our room at Quail Lodge and finally ordered one for our home. We’re so glad we did! My wife has noticed decreased hip and back pain so we made the right choice! The overall experience was great from the start.! Special thanks to Anton who guided us through the process which also included the disposal of our old mattress. We received everything as advertised and more! Thank you, Dingo and Tootsie
Excellent Mattress
My wife and I first enjoyed the Imperial 625 when staying at our hotel in Santa Maria, CA. We called the front desk to ask what the mattress was and we now have one at our home in Missouri. It is superb.
Excellent!
Our experience has been fantastic! Customer service has exceeded our expectations the mattress got here very quickly, especially considering we are 3000 miles away! Still getting used to the mattress but its definitely a winner amazing quality and the mattress is firm but plush! Perfect medium for my husband and I. Thank you for our amazing mattress and and going above and beyond with customer service!