Cal King Size Extra Firm Serta Mattresses
Extra Firm Comfort
Extra Firm?
What Does Extra Firm Comfort Mean?
Extra firm mattresses have the least amount of additional padding & upholstery sewn in to the top of the mattress. The sleeping surface is tightly woven with little to no "give." Extra firm mattresses are for sleepers who enjoy sleeping on a very hard / firm surface. As a visual reference only, extra firm mattresses compare to laying down on the sand at a beach. Despite having less padding & cushion, extra firm mattress still provide comfort & support that will ensure you receive the best night's sleep.
Comfort Rating: 1
Recommended For: Side Sleepers
Cal King Size Extra Firm Mattress Bundles
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Azure Bay Firm
Cal King Size

Serta Value Collection

Brand New Includes 10 Year Limited Warranty
365 Day Lowest Price Guarantee i
30-Day Return Guarantee
If for any reason you are not satisfied with this product, your purchase is covered by our 30-day return policy. All contents and original packaging must be included with all returns. See all terms/conditions & restocking fee.
  • Includes: 30 Night In-Home Trial
  • Factory Freshajaxinfo Made To Order
  • Comfort Level: Firm | Comfort Rating: 3
  • Mattress Height: 12"
  • Cool Twist® Gel Foam
    - Cooling Gel
    - Promotes Airflow & Heat Dissipation
  • Edge® Foam Encasement Technology
    - Reduce Edge Roll-off & Extend Sleep Surface

Free In-Home Delivery
Free Set-Up
Free Removal
Free Premium Accessory Package Bundle Valued $200 Directly Added To The Cart
**Minimum Purchase of $650 Required.
Availability: ✓ In Stock

$1,024.00
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Cobalt Coast™ Firm
Cal King Size

Serta Perfect Sleeper
Brand New Includes 10 Year Limited Warranty
365 Day Lowest Price Guarantee i
30-Day Return Guarantee
If for any reason you are not satisfied with this product, your purchase is covered by our 30-day return policy. All contents and original packaging must be included with all returns. See all terms/conditions & restocking fee.
  • Includes: 30 Night In-Home Trial
  • Factory Freshajaxinfo Made To Order
  • Comfort Level: Firm | Comfort Rating: 3
  • Mattress Height: 12"
  • Serta Support Foam
    - Combines Gentle Cushioning with An Overall Firmer Feel
  • Edge® Foam Encasement Technology
    - Reduce Edge Roll-off & Extend Sleep Surface
  • HexCloud™ Gel Foam

Free In-Home Delivery
Free Set-Up
Free Removal
Free Premium Accessory Package Bundle Valued $200 Directly Added To The Cart
**Minimum Purchase of $650 Required.
Availability: ✓ In Stock

$1,249.00
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Sapphire Canyon™ Extra Firm Cal King Size

Serta Perfect Sleeper
Brand New Includes 10 Year Limited Warranty
365 Day Lowest Price Guarantee i
30-Day Return Guarantee
If for any reason you are not satisfied with this product, your purchase is covered by our 30-day return policy. All contents and original packaging must be included with all returns. See all terms/conditions & restocking fee.
  • Includes: 30 Night In-Home Trial
  • Factory Freshajaxinfo Made To Order
  • Comfort Level: Extra Firm | Comfort Rating: 1.5
  • Mattress Height: 13"
  • PillowSoft® Aire
    - Provides Enhanced Cushioning for Exceptional Comfort
  • Antimicrobial Mattress Protection
    - Prevents from Affecting Appearance & Mattresses Lifespan
  • HexCloud™ Gel Foam

Free In-Home Delivery
Free Set-Up
Free Removal
Free Premium Accessory Package Bundle Valued $200 Directly Added To The Cart
**Minimum Purchase of $650 Required.
Availability: ✓ In Stock

$1,499.00
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iComfort™ CF2000 Firm
King Size

iComfort Foam Mattress
Brand New Includes 10 Year Limited Warranty
365 Day Lowest Price Guarantee i
30-Day Return Guarantee
If for any reason you are not satisfied with this product, your purchase is covered by our 30-day return policy. All contents and original packaging must be included with all returns. See all terms/conditions & restocking fee.
  • Factory Freshajaxinfo Made To Order
    • Firm | Comfort Rating: 3
  • Mattress Height: 11.5"
  • Carbon Fiber Memory Foam
  • 3" EverCool® Fuze Gel Memory Foam
    - Contribute to a Cooler Night's Sleep
  • Gel Active® Max Memory Foam
  • Serta Foam Core
  • Compatible with Adjustable Bases


Free In-Home Delivery
Free Set-Up
Free Removal
Free Premium Accessory Package Bundle Valued $200 Directly Added To The Cart
**Minimum Purchase of $650 Required.


Availability: ✓ In Stock

$2,499.00
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iComfort Hybrid CF2000 Firm
Cal King Size

iComfort Hybrid Mattress
Brand New Includes 10 Year Limited Warranty
365 Day Lowest Price Guarantee i
30-Day Return Guarantee
If for any reason you are not satisfied with this product, your purchase is covered by our 30-day return policy. All contents and original packaging must be included with all returns. See all terms/conditions & restocking fee.
  • Includes: 120 Night In-Home Trial
  • Factory Freshajaxinfo Made To Order
  • Comfort Level: Firm | Comfort Rating: 1.5
  • Mattress Height: 12.5"
  • Carbon Fiber Memory Foam
  • EverCool Fuze Gel Memory Foam
    - Provides Outstanding Pressure Relief to Help Reduce Tossing & Turning
  • Gel Active Max Memory Foam
  • Cold Touch Cover
  • Compatible with Adjustable Bases, Platform Bed, Box Spring, Traditional Frames


Free In-Home Delivery
Free Set-Up
Free Removal
Free Premium Accessory Package Bundle Valued $200 Directly Added To The Cart
**Minimum Purchase of $650 Required.
Availability: ✓ In Stock

$2,499.00
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iComfort™ CF4000 Firm
King Size

iComfort Foam Mattress
Brand New Includes 10 Year Limited Warranty
365 Day Lowest Price Guarantee i
30-Day Return Guarantee
If for any reason you are not satisfied with this product, your purchase is covered by our 30-day return policy. All contents and original packaging must be included with all returns. See all terms/conditions & restocking fee.
  • Includes: 120 Night In-Home Trial
  • Factory Freshajaxinfo Made To Order
  • Firm Comfort Level | Comfort Rating: 3
  • Mattress Height:13.5"
  • Carbon Fiber Memory Foam
  • Air Support™ Foam
    - Help Alleviate Aches & Pains Caused by Pressure Points
  • Max Cold™ Cover
  • UltraCold System™
  • Compatible with Adjustable Bases, Platform Bed, Box Spring


Free In-Home Delivery
Free Set-Up
Free Removal
Free Premium Accessory Package Bundle Valued $200 Directly Added To The Cart
**Minimum Purchase of $650 Required.
Availability: ✓ In Stock

$3,699.00
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