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King Koil World Extended Life Athens Extra Firm

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Product description from King Koil:

Watch GoodBed's overview of the King Koil World Extended Life product line-up here:

Product description from King Koil:

The King Koil World Extended Life Athens Extra Firm mattress is over-engineered to be durable and deliver support for all body sizes while still comfortable for all. Designed with resilient high-density foams, graphite Talalay latex, our exclusive Perfect Contour Reaction innerspring unit and a strong wood foundation, the collection is backed by a 25-year warranty. 

This mattress excelled in meeting the International Chiropractors Association (ICA) standard to help achieve a better night’s sleep resulting in receiving the ICA Gold Endorsement.

All King Koil mattresses are designed and built in the USA since 1898.


• Safeguard Fibers
• Tencel Fibers
• 1” Superior High Density Foam
• 0.5” High Performance Foam

• 1” Extra Firm Density Foam
• 2” Graphite Firm Latex

• 8" 1022 Perfect Contour Reaction (PCR) Coil System
• Excellent Edge Foam Encasement
• 1.5" Everlast Base Foam

Strength & Durability

The World Extended Life collection uses only the most durable and highly resilient foams to assure you years of comfort and support. King Koil Extended Life mattresses are built for indestructible comfort. Engineered to be durable and supportive for anybody-from big and tall down to the most petite individual. These heavy-duty performers, which have been tested well beyond the standard, are built to last, with resilient high-density foams and extra-strength wood foundation. 

Other Features

  • Reduced Motion Disturbance  
  • Expanded Sleeping Surface  
  • Rapid Response Foam  
  • Pressure Relieving Support  
  • Individualized Support and Comfort  
  • Temperature Regulation  
  • Proper Spinal Alignment  
  • Pressure Equalization  
  • Tencel Fibers  
  • Proudly Designed and Built in the USA

Bottom Line Is this a good bed for you?

Fit: Recommended for people who...

Prefer to sleep on their stomach
Prefer little to no softness

Function: Rated for its...

Motion Isolation
Pressure Relief

Features: Contains...

  • Foam
  • Innerspring
  • Latex
  • Pocketed Coils
See specs for the Athens Extra Firm »
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Reviews Athens Extra Firm

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Q&A Athens Extra Firm

Model Features Athens Extra Firm

Support Core:
Comfort Level:
Very Firm
Surface Type:
Tight Top


Mattress Components:


Overall Build
  • No-Flip
  • Works with an adjustable base
  • Mattress Thickness: 14"

About this Model Athens Extra Firm

Active (released 2018) (edit this)
King Koil
King Koil World Extended Life
Model Name:
Athens Extra Firm

Additional Information Athens Extra Firm


The Athens Extra Firm is a tight top spring core very firm mattress model released in 2018 that is part of the World Extended Life product line manufactured by King Koil. The Athens Extra Firm is a 14-inch thick no-flip mattress that offers edge support.


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