
Copper Lux 12"
Buy if: You want a plush 12" memory foam mattress with copper-infused and gel memory foams under a phase change cooling cover, at a great value.

Buy if: You prefer a firm, supportive hybrid with individually wrapped coils, reinforced PowerEdge® edges and a 10-year non-prorated warranty at a budget-friendly price.
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Designed by Southerland, an American mattress manufacturer with over 130 years of experience, the St. Simons Firm pairs durable coil support with a firm, dependable feel at a budget-friendly price.


A knit fabric cover quilted with high-density foam.
Gives you a clean, comfortable surface while keeping the overall feel firm.
A 1" layer of high-density comfort foam.
Adds just enough cushioning to relieve pressure while keeping the mattress stable.
An 8" system of individually wrapped coils with PowerEdge® support.
Provides strong back and body support, reduces motion transfer and reinforces the edges.
A high-density base support foam.
Absorbs shock and gives the mattress a solid, durable foundation.
PRODUCT DESCRIPTION
If you’re looking for a supportive, firm mattress without the premium price tag, the St. Simons Firm is an outstanding value. Designed by Southerland—an American mattress manufacturer with over 130 years of experience—and now powered by 3Z Brands, this mattress focuses on delivering durable support and dependable comfort at a budget-friendly price.
A premium knit fabric cover with high-density quilt foam provides a clean, comfortable sleep surface while maintaining a firmer overall feel. Beneath the cover, high-density comfort foam adds just enough cushioning to relieve pressure while still keeping the mattress supportive and stable.
At the heart of the mattress is an 8″ 800 Series individually wrapped coil system with PowerEdge® support. These responsive coils provide strong back and body support, help reduce motion transfer between sleepers, and reinforce the edges so you can comfortably use the full surface of the mattress.
A high-density base support foam completes the design, absorbing shock and providing a solid foundation that enhances durability and long-term performance.
For shoppers who want firm support, reliable construction, and excellent value, the St. Simons Firm delivers quality that often exceeds what you’ll find in many mattresses at this price point. It’s a smart choice for anyone who prefers a sturdier feel and wants a mattress that will hold up well night after night—without stretching the budget.
KEY FEATURES
Visit our Palm Harbor showroom at 36243 US Hwy 19 N, Palm Harbor, FL 34684, or give us a call.
Mon-Sat 10am-7pm · Sun 1pm-7pm
It has a firm comfort level made for sleepers who prefer strong support. The quilt foam and 1" comfort foam add a little cushioning on top, but the overall feel stays sturdy.
A premium knit cover with high-density quilt foam, 1" of high-density comfort foam, an 8" 800 Series individually wrapped coil system with PowerEdge® support, and a high-density base foam.
The individually wrapped coils and high-density base foam help reduce motion transfer between sleepers, and PowerEdge® support reinforces the edges so you can use the whole mattress.
The St. Simons Firm is about 11" tall and is adjustable base friendly.
The foams are CertiPUR-US® certified, and the mattress is backed by a 10-year non-prorated warranty.
It is available in Twin, Twin XL, Full, Queen, King and Cali-King. Pick your size above to see the price.
Yes. Prices on our site include free shipping and exclude sales tax.
Choose your size, then click "Get Premier Mattress Direct Special Price" and enter your details to receive an exclusive in-store offer on the St. Simons Firm. There is no obligation to purchase.

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