Sealy Posturepedic Response Premium Onassis Cushion Firm Mattress
Mattress Size Regular | Sale | FINAL PRICE
Twin $1139 | $1036 | Call!
Twin XL $1190 | $1082 | Call!
Full $1175 | $1068 | Call!
Queen $1175 | $1068 | Call!
King $1548 | $1408 | Call!
California King $1548 | $1408 | Call!
Call for best deal and expert mattress advice!


Sleep City is one of the largest mattress web dealers in the country specializing in luxury products at the best price.

Call 877-246-7533 to speak with our knowledgeable staff to get the best mattress advice in the industry. We will provide you with the best price and service available.

We constantly monitor our competition to ensure the best prices in the country.

Sealy Posturepedic Response Premium Onassis Cushion Firm Mattress

The Sealy Posturepedic Response Premium Onassis Cushion Firm Mattress has a Comfort Scale Rating of 30. Response Pro HD Encased Coil System and DuraFlex Edge System provide cushion firm support, edge to edge. Sealy Cushion Air Foam adds a bit more comfort to this supportive Cushion Firm mattress, letting you wake up feeling well-rested.

Learn about free items included with this product.

All premium products are eligible for free complimentary sleep products. Our free products aren’t the typical cheap throw-ins. We believe high quality mattresses should be paired with high quality accessories. To confirm if the mattress you are interested in comes with complimentary sleep products see the drop down menu below or call one of our sleep experts today.

•   Free Premium Bed Frame - highest quality bed frame available from Serta & Simmons. Heavy duty metal construction with proper center support rails. Note: available on mattress sets only

•   Free Premium Mattress Protector - The best in the business. Ultra thin, breathable, dust mite barrier, water proof, washable and made for all mattress depths.

•   Free Gel Microfiber Pillows - Two Perfect all purpose pillows.

Don’t need some or all of it? No problem. You get to pick and choose your bundle and anything you don’t need we apply the discount to your mattress purchase.

Want to upgrade your mattress protector or pillows? No problem. Upgrades options are available at discounted rates and are listed in the drop down menus for each product.

Product Description

The Sealy Posturepedic Response Premium Onassis Cushion Firm Mattress has a Comfort Scale Rating of 30. You’ll sleep peacefully knowing that all the foam used is CertiPUR-US certified. Providing a base for the internal support structure is 1 inch of Sealy Support Firm Foam tucked underneath of the Response Pro HD Encased Coil System, there are 960 firm coils in the Queen sized model. The mattress is lined around all four edges with the DuraFlex Edge System which provides ultra firm support and creates a consistent firm sleep surface, edge to edge. While 3 inches of Sealy Support Foam adds to the support structure, and .5 inches of Sealy Cool Gel Memory Foam adds deep contouring for pressure point relief. Next, 2 inches of Sealy Cushion Air Foam creates a cloud of comfort on top of the supportive base so you can rest easy. All of this is surrounded with the SupremeLoft Cover with Moisture Protect and Allergen Protect which draws moisture away from you keeping you cool and comfortable while you sleep.


Key Features of the Sealy Posturepedic Response Premium Onassis Cushion Firm Mattress:

  • SupremeLoft Cover with MoistureProtect and AllergenProtect – This cover features a high loft, soft knit fabric made with durable spun yarns for a comfortable plush feeling next to your body. Additionally, MoistureProtect is designed to draw moisture away from your body so you can stay cool and comfortable throughout the night. AllergenProtect protects the mattress from common allergens like dust mites and dander, helping the mattress stay fresh.
  • SealyCushion Air Foam-The SealyCushion Air Foam is formed with peaks and valleys for additional airflow throughout the mattress and provides soft cushioning comfort and support for your body.
  • Posturepedic Technology - Posturepedic Technology provides support where you need it most. At least 50% of your body weight sits in your back and hips so, Sealy has reinforced the center third of the mattress with a layer of SealyCool Gel foam to provide deep targeted support for exceptional all over comfort.
  • SealyCool Gel Memory Foam – Is a conforming foam with gel added for superior pressure point relief and deep down cushioning support.
  • SealySupport Foam- Is a high-quality firmer foam that is used as a support layer.
  • SealySupport Firm Foam- Is a high quality firmer support foam that is used in all Sealy Response Innerspring Mattresses. This foam gives a solid supportive feel and increases the durability of the mattress.
  • Response Pro HD Encased Coil System (Coil Density 960) –  The Response Pro HD Encased Coil System is comprised of hundreds of densely packed, individually encased hourglass-shape coils with a dual stage design, meaning more coils are placed in the center third of the mattress to ensure you get proper support where you need it most. These individually encased coils allow each coil to move independently providing unique targeted support and reduced motion transfer so, motion on one side cannot be felt on the other side. 
  • DuraFlex Edge System – A high density, flexible coil border which surrounds the entire outer edge of the mattress improves durability and provides an even surface to the very edge of the mattress. This system allows for more sleep space and ensures you won’t slip or roll out of bed.
  • Adjustable Base Friendly 
  • 10 Year Limited Warranty – The Best warranty in the business.
Mattress Height 14.5"
Quilt SupremeLoft Cover with MoistureProtect and AllergenProtect, FlameGuard AirLoft Fiber, 2" SelayCushion Air Foam, 0.5" SealyCool Gel Memory Foam Center 1/3
Comfort Layer 0.5" SealyCool Gel Memory Foam, 3" SealySupport Foam
Support System Response Pro HD Encased Coil System (Coil Count: 960), DuraFlex Edge System, 1" SealySupport Firm Foam, 8 Handles
Warranty 10 Year Limited Warranty