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- Serenity Hybrid | Medium-Plush
Serenity Hybrid | Medium-Plush
Serenity Hybrid | Medium-Plush
Cooling Hybrid, Plush Comfort
210+ people bought
- All-Night Cooling: PCM stretch-knit cover + breathable foams regulate temperature.
- Pressure Relief + Bounce: GELTEX® foam mimics latex feel with superior longevity.
- Conforming Comfort: Serene® Foam adapts quickly and relieves pressure without heat build-up.
- Targeted Support: 768 pocketed coils with edge support align the spine and minimize motion transfer.
- Great Value: Premium hybrid design at a price hundreds less than online competitors.
Side
Back
Hybrid
Medium-Plush
Twin
$674
$599.95
Twin XL
$799
$699.95
Full
$1,049
$899.95
Queen
$1,199
$999.95
King
$1,449
$1,249.95
Split King
$1,599
$1,399

Cooling Hybrid, Plush Comfort
Size guide
Size guide
Size | Dimensions | Weight |
---|---|---|
![]() Twin |
38"W x 75"L x 13"H | - |
![]() Twin XL |
38"W x 80"L x 13"H | - |
![]() Full |
54"W x 75"L x 13"H | - |
![]() Queen |
60"W x 80"L x 13"H | - |
![]() King |
76"W x 80"L x 13"H | - |
![]() Split King |
38"W x 80"L x 13"H (Qty 2) | - |
Bed frame options

Foundation | High Profile (9")
$130

Foundation | High Profile (9")
Strong 9" Steel Box Spring Base
- Heavy-Duty Steel Support: Semi-Flex® grid design outperforms wood foundations for strength and longevity.
- No Squeaks or Creaks: Welded truss construction stays quiet through the night.
- Non-Skid Top Fabric: Prevents mattress movement for a secure sleep surface.
- Ready to Use: No assembly required—just place and go.
- Compatible with All Mattresses: Designed to work with any type of mattress for full-body support.
Twin
$130
Twin XL
$150
Full
$160
Queen
$180
King
$300
In stock. Delivery by September 28

Adjustable Base | 2.0 Basic
$650
$779

Adjustable Base | 2.0 Basic
Functional Flex Base | User-Friendly
- Custom Comfort: Easily adjust head and feet settings for personalized sleep and relaxation.
- Convenient Control: Wireless remote with custom presets and flashlight for easy, personalized adjustments.
- Flexible Design: Adjustable leg heights cater to various bed heights and aesthetic preferences.
Twin XL
$779
$650
Full
$999
$800
Queen
$999
$800
King
$1,299
$1,000
Split King
$1,558
$1,300
In stock. Delivery by September 28

Adjustable Base | 3.0 Plus
$900
$1,029

Adjustable Base | 3.0 Plus
Most Popular + Massage Feature
- Personalized Comfort & Convenience: Enjoy the ultimate relaxation with the adjustable head and feet positions, complemented by a soothing dual zone massage feature. Easily find and save your favorite positions for consistent comfort.
- Intuitive Control & Accessibility: Effortlessly adjust settings with a backlit wireless remote, featuring a handy flashlight for ease in the dark. Simple, accessible comfort control.
- Ambient and Customizable Design: Enhance your bedroom's ambiance with subtle under-bed lighting, and tailor the bed's profile to your preference with adjustable leg heights for the perfect look and feel.
Twin XL
$1,029
$900
Full
$1,299
$1,100
Queen
$1,299
$1,100
King
$1,549
$1,300
Split King
$2,058
$1,800
In stock. Delivery by September 28

Foundation | High Profile (9")
$150

Foundation | High Profile (9")
Strong 9" Steel Box Spring Base
- Heavy-Duty Steel Support: Semi-Flex® grid design outperforms wood foundations for strength and longevity.
- No Squeaks or Creaks: Welded truss construction stays quiet through the night.
- Non-Skid Top Fabric: Prevents mattress movement for a secure sleep surface.
- Ready to Use: No assembly required—just place and go.
- Compatible with All Mattresses: Designed to work with any type of mattress for full-body support.
Twin
$130
Twin XL
$150
Full
$160
Queen
$180
King
$300
In stock. Delivery by September 28

Adjustable Base | 2.0 Basic
$800
$999

Adjustable Base | 2.0 Basic
Functional Flex Base | User-Friendly
- Custom Comfort: Easily adjust head and feet settings for personalized sleep and relaxation.
- Convenient Control: Wireless remote with custom presets and flashlight for easy, personalized adjustments.
- Flexible Design: Adjustable leg heights cater to various bed heights and aesthetic preferences.
Twin XL
$779
$650
Full
$999
$800
Queen
$999
$800
King
$1,299
$1,000
Split King
$1,558
$1,300
In stock. Delivery by September 28

Adjustable Base | 3.0 Plus
$1,100
$1,299

Adjustable Base | 3.0 Plus
Most Popular + Massage Feature
- Personalized Comfort & Convenience: Enjoy the ultimate relaxation with the adjustable head and feet positions, complemented by a soothing dual zone massage feature. Easily find and save your favorite positions for consistent comfort.
- Intuitive Control & Accessibility: Effortlessly adjust settings with a backlit wireless remote, featuring a handy flashlight for ease in the dark. Simple, accessible comfort control.
- Ambient and Customizable Design: Enhance your bedroom's ambiance with subtle under-bed lighting, and tailor the bed's profile to your preference with adjustable leg heights for the perfect look and feel.
Twin XL
$1,029
$900
Full
$1,299
$1,100
Queen
$1,299
$1,100
King
$1,549
$1,300
Split King
$2,058
$1,800
In stock. Delivery by September 28

Foundation | High Profile (9")
$160

Foundation | High Profile (9")
Strong 9" Steel Box Spring Base
- Heavy-Duty Steel Support: Semi-Flex® grid design outperforms wood foundations for strength and longevity.
- No Squeaks or Creaks: Welded truss construction stays quiet through the night.
- Non-Skid Top Fabric: Prevents mattress movement for a secure sleep surface.
- Ready to Use: No assembly required—just place and go.
- Compatible with All Mattresses: Designed to work with any type of mattress for full-body support.
Twin
$130
Twin XL
$150
Full
$160
Queen
$180
King
$300
In stock. Delivery by September 28

Adjustable Base | 2.0 Basic
$800
$999

Adjustable Base | 2.0 Basic
Functional Flex Base | User-Friendly
- Custom Comfort: Easily adjust head and feet settings for personalized sleep and relaxation.
- Convenient Control: Wireless remote with custom presets and flashlight for easy, personalized adjustments.
- Flexible Design: Adjustable leg heights cater to various bed heights and aesthetic preferences.
Twin XL
$779
$650
Full
$999
$800
Queen
$999
$800
King
$1,299
$1,000
Split King
$1,558
$1,300
In stock. Delivery by September 28

Adjustable Base | 3.0 Plus
$1,100
$1,299

Adjustable Base | 3.0 Plus
Most Popular + Massage Feature
- Personalized Comfort & Convenience: Enjoy the ultimate relaxation with the adjustable head and feet positions, complemented by a soothing dual zone massage feature. Easily find and save your favorite positions for consistent comfort.
- Intuitive Control & Accessibility: Effortlessly adjust settings with a backlit wireless remote, featuring a handy flashlight for ease in the dark. Simple, accessible comfort control.
- Ambient and Customizable Design: Enhance your bedroom's ambiance with subtle under-bed lighting, and tailor the bed's profile to your preference with adjustable leg heights for the perfect look and feel.
Twin XL
$1,029
$900
Full
$1,299
$1,100
Queen
$1,299
$1,100
King
$1,549
$1,300
Split King
$2,058
$1,800
In stock. Delivery by September 28

Foundation | High Profile (9")
$180

Foundation | High Profile (9")
Strong 9" Steel Box Spring Base
- Heavy-Duty Steel Support: Semi-Flex® grid design outperforms wood foundations for strength and longevity.
- No Squeaks or Creaks: Welded truss construction stays quiet through the night.
- Non-Skid Top Fabric: Prevents mattress movement for a secure sleep surface.
- Ready to Use: No assembly required—just place and go.
- Compatible with All Mattresses: Designed to work with any type of mattress for full-body support.
Twin
$130
Twin XL
$150
Full
$160
Queen
$180
King
$300
In stock. Delivery by September 28

Adjustable Base | 2.0 Basic
$1,000
$1,299

Adjustable Base | 2.0 Basic
Functional Flex Base | User-Friendly
- Custom Comfort: Easily adjust head and feet settings for personalized sleep and relaxation.
- Convenient Control: Wireless remote with custom presets and flashlight for easy, personalized adjustments.
- Flexible Design: Adjustable leg heights cater to various bed heights and aesthetic preferences.
Twin XL
$779
$650
Full
$999
$800
Queen
$999
$800
King
$1,299
$1,000
Split King
$1,558
$1,300
In stock. Delivery by September 28

Adjustable Base | 3.0 Plus
$1,300
$1,549

Adjustable Base | 3.0 Plus
Most Popular + Massage Feature
- Personalized Comfort & Convenience: Enjoy the ultimate relaxation with the adjustable head and feet positions, complemented by a soothing dual zone massage feature. Easily find and save your favorite positions for consistent comfort.
- Intuitive Control & Accessibility: Effortlessly adjust settings with a backlit wireless remote, featuring a handy flashlight for ease in the dark. Simple, accessible comfort control.
- Ambient and Customizable Design: Enhance your bedroom's ambiance with subtle under-bed lighting, and tailor the bed's profile to your preference with adjustable leg heights for the perfect look and feel.
Twin XL
$1,029
$900
Full
$1,299
$1,100
Queen
$1,299
$1,100
King
$1,549
$1,300
Split King
$2,058
$1,800
In stock. Delivery by September 28

Foundation | High Profile (9")
$300

Foundation | High Profile (9")
Strong 9" Steel Box Spring Base
- Heavy-Duty Steel Support: Semi-Flex® grid design outperforms wood foundations for strength and longevity.
- No Squeaks or Creaks: Welded truss construction stays quiet through the night.
- Non-Skid Top Fabric: Prevents mattress movement for a secure sleep surface.
- Ready to Use: No assembly required—just place and go.
- Compatible with All Mattresses: Designed to work with any type of mattress for full-body support.
Twin
$130
Twin XL
$150
Full
$160
Queen
$180
King
$300
In stock. Delivery by September 28

Adjustable Base | 2.0 Basic
$1,300
$1,558

Adjustable Base | 2.0 Basic
Functional Flex Base | User-Friendly
- Custom Comfort: Easily adjust head and feet settings for personalized sleep and relaxation.
- Convenient Control: Wireless remote with custom presets and flashlight for easy, personalized adjustments.
- Flexible Design: Adjustable leg heights cater to various bed heights and aesthetic preferences.
Twin XL
$779
$650
Full
$999
$800
Queen
$999
$800
King
$1,299
$1,000
Split King
$1,558
$1,300
In stock. Delivery by September 28

Adjustable Base | 3.0 Plus
$1,800
$2,058

Adjustable Base | 3.0 Plus
Most Popular + Massage Feature
- Personalized Comfort & Convenience: Enjoy the ultimate relaxation with the adjustable head and feet positions, complemented by a soothing dual zone massage feature. Easily find and save your favorite positions for consistent comfort.
- Intuitive Control & Accessibility: Effortlessly adjust settings with a backlit wireless remote, featuring a handy flashlight for ease in the dark. Simple, accessible comfort control.
- Ambient and Customizable Design: Enhance your bedroom's ambiance with subtle under-bed lighting, and tailor the bed's profile to your preference with adjustable leg heights for the perfect look and feel.
Twin XL
$1,029
$900
Full
$1,299
$1,100
Queen
$1,299
$1,100
King
$1,549
$1,300
Split King
$2,058
$1,800
In stock. Delivery by September 28
In stock. Delivery by September 29
100-Night Trial
Free One-Day Delivery
10 Year Warranty
- Expertly handled by our dedicated Mattress King Delivery Crew.
- Secure delivery right to your doorstep or garage, mirroring the convenience of services like FedEx, UPS, or Amazon.
Upgrade to our comprehensive service that includes everything in the Free Delivery, plus:
- Personalized delivery and setup in your preferred room.
- Safe removal of your old mattress and box spring, if required.
- Eco-friendly disposal of all packaging materials.
Exclusively Serving Oklahoma- For detailed delivery information, please visit here
- Mattress King Oklahoma City (208 S Portland Ave, Oklahoma City)
- Mattress King Stillwater (511 S Main St, Stillwater)
- Mattress King Lawton-North (1318 NW Sheridan Rd, Lawton)
Materials
Construction of Mattress:
4 Layer Design, 13" Profile
- Soft PCM Cooling Stretch Knit Hybrid Cover with Antimicrobial Treatment
- 2” Serene® Foam with Supportive Air Technology
- 2” High-Performance GELTEX® Foam
- 768 Quad Pocket Coil System with Quad Edge Perimeter Support
- 1” High-Density Base Foam
- Shift-Resistant Lower Cover
Basic Care: Spot clean with a mild detergent, such as upholstery cleaner. We highly recommend using a waterproof mattress protector to ensure the longevity of your mattress.
Certifications
All foams meet CertiPUR-US® standards for content, emissions, and durability, and are analyzed by independent, accredited testing laboratories.
Protected by a chemical-free and fiberglass-free fire barrier meeting 16 CFR 1633 and 16 CFR 1632 compliance
is a certification program administered by a nonprofit organization.
- Made without ozone depleters
- Made without PBDEs or the following Tris flame retardants: TCEP, TDBPP, TDCPP or TEPA
- Made without mercury, lead, and other heavy metals
- Made without formaldehyde
- Made without phthalates regulated by the Consumer Product Safety Commission
- Low VOC (Volatile Organic Compound) emissions for indoor air quality (less than 0.5 parts per million)
Warranty
10-Year Warranty
If defects in materials or workmanship arise, Golden will repair or replace your mattress for as long as you own it. Pair with Mattress King's 100-night risk-free trial for total peace of mind.
View full warranty details here
Where it’s made
American Craftsmanship: Made in Texas
Expert Assistance Awaits
Get expert advice from our sleep specialists to ensure your best night’s sleep.
OR
Prefer a Personal Touch? Book Your In-Store Visit to discover mattresses and sleep essentials customized for your comfort.







Discover Cooling Comfort + Responsive Support
The Serenity Hybrid | Medium-Plush is designed to tackle overheating and restless nights. The PCM cooling cover keeps you refreshed, while Serene® Foam relieves pressure without trapping heat. GELTEX® foam adds buoyant comfort with long-lasting durability. Individually wrapped coils provide ergonomic alignment, reduce motion transfer, and reinforce edge support. Perfect for hot sleepers, side sleepers, and anyone seeking balanced plush comfort.
The Serenity Hybrid | Medium-Plush is designed to tackle overheating and restless nights. The PCM cooling cover keeps you refreshed, while Serene® Foam relieves pressure without trapping heat. GELTEX® foam adds buoyant comfort with long-lasting durability. Individually wrapped coils provide ergonomic alignment, reduce motion transfer, and reinforce edge support. Perfect for hot sleepers, side sleepers, and anyone seeking balanced plush comfort.

Firmness Scale
1-3
3-4
4-6
6-8
8-9
9-10
Plush
Medium-Plush
Medium
Medium-Firm
Firm
Extra-firm
Support
Support ensures a mattress keeps its shape under your body weight, providing essential spinal alignment. Ideal for partners or larger body types, it evenly distributes weight for lasting structural integrity.
Learn more
Low
Medium
High
Pressure Relief
Basic
Average
Advanced
Air Circulation
Air circulation regulates temperature for comfortable sleep. Upgraded mattresses with special fabrics and foams offer superior cooling, ensuring a more restful experience compared to standard options.
Good
Better
Best
You may also like...

Nectar Classic Hybrid Mattress | Medium
$469.95
$799.00or as low as $117/month

Nectar Classic Memory Foam | Medium-Firm
$349.95
$699.00or as low as $87/month

Serenity | Plush
$499.95
$574.00or as low as $124/month

Presidential | Plush
$1,399.95
$1,749.00or as low as $349/month
Frequently bought together...

Adjustable Base | 1.0 Starter
$350.00
or as low as $87/month

Monster Bed Frame
$89.95
or as low as $22/month

Foundation | High Profile (9")
$130.00
or as low as $32/month

FRIO 5-Sided Premium Cooling Mattress Protector
$75.95
or as low as $18/month
Frequently Asked Questions
What makes GELTEX® foam different from latex or memory foam?
GELTEX® is a high-performance comfort foam that combines the best qualities of different materials. It has the responsive, buoyant, and almost "bouncy" feel of latex, which makes it easy to move on the mattress. However, it is engineered to provide superior pressure relief and durability compared to many foams. For the sleeper, this means you get a gentle lift and support without the slow-sinking feeling of traditional memory foam.
How does the cooling technology in this mattress actually work?
The Serenity Hybrid uses a multi-faceted approach to cooling. The primary technology is the PCM (Phase Change Material) woven into the cover. PCM is a smart material that actively absorbs and releases body heat to maintain a balanced and comfortable temperature throughout the night. This is supported by breathable comfort layers like Serene® and GELTEX® foam, which have an open-cell structure that promotes airflow and prevents heat from getting trapped, unlike traditional memory foams.
Is a hybrid mattress a good choice for me?
A hybrid mattress is an excellent choice for a wide range of sleepers, especially those who want the "best of both worlds." You get the contouring comfort and pressure relief from the top foam layers (Serene® and GELTEX®) combined with the durable support, breathability, and edge-to-edge stability of an innerspring coil system. If you like the cushioning of foam but don't want to sacrifice the traditional support and airflow of a spring mattress, the Serenity Hybrid is a perfect fit.
Do you offer financing options?
At Mattress King, we offer a variety of financing options to fit your budget. Our financing partners include Synchrony, Affirm, and Snap Finance, each offering distinct plans to accommodate different financial needs.
Synchrony: For those with good credit, Synchrony provides a 12-month plan with 0% interest, helping you manage payments without additional costs.
Affirm: Affirm offers flexibility with interest rates ranging from 0% to 36%. They provide three payment term options, allowing you to choose a plan that best suits your budget.
Snap Finance: Ideal for those who might not have a strong credit history. Snap Finance considers other factors like a steady income and an active checking account. They offer a 100-day cash option and operate on a lease-to-own basis.
Each of these options is designed to make your mattress purchase more manageable financially. You can explore these options and apply directly to find the one that aligns with your financial situation.
What are the dimensions for standard mattress sizes?
Choosing the right size is a key part of finding the perfect mattress. Here are the standard mattress dimensions to help you measure your space and decide which size is best for you. This mattress is available in most of the sizes listed below.
- Twin: 38" x 75" — Ideal for children, bunk beds, and single sleepers in smaller rooms.
- Twin XL: 38" x 80" — A great choice for taller teenagers or for use in college dorms. Two Twin XLs also form a Split King.
- Full: 54" x 75" — Offers more width for solo sleepers and is a popular choice for guest rooms.
- Queen: 60" x 80" — The most popular mattress size, providing comfortable space for couples or a luxurious amount of room for an individual.
- King: 76" x 80" — The widest standard size, perfect for couples who want maximum personal sleeping space
- California King: 72" x 84" — Offers extra length for taller individuals, though it is slightly narrower than a standard King.
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