King Koil eXtended Life XL 300 II

GoodBed Brand Rating

The No Sag Mattress
The XL or eXtended Life Mattress Collection has been specifically designed to meet the needs of plus-size sleepers. Many plus-size sleepers find that their mattress is uncomfortable, unsupportive and that it tends to wear out quicker. The XL Collection alleviates these common problems with thoughtful engineering to provide a comfortable feel, enhanced support and increased durability. As proof of the XL Collection's quality, it even comes with a 15-year warranty against defects.

Bottom Line Is this a good bed for you?

Fit: Recommended for people who...

Prefer to sleep on their side
Prefer to sleep on their back
Prefer to sleep on their stomach
Prefer medium softness

Function: Rated for its...

Motion Isolation
Pressure Relief

Features: Contains...

  • Innerspring
  • Latex
  • Memory Foam
See specs for the XL 300 II »

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This is awesome. Now I feel equipped to walk in somewhere and say with certainty, "This is exactly what I'm looking for."
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Reviews XL 300 II

The King Koil eXtended Life XL 300 II mattress model is recommended by 0% of owners on GoodBed (based on 1 rating).

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Q&A XL 300 II

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Model Features XL 300 II

Support Core:
Comfort Level:
Surface Type:
Tight Top


Mattress Components:
Special Characteristics:
Designed to help with:


Overall Build
  • No-Flip
  • Mattress Thickness: 12.5"

About this Model XL 300 II

Active (edit this)
King Koil
eXtended Life (XL)
Model Name:
XL 300 II

Additional Information XL 300 II


The XL 300 II is a tight top spring core medium mattress model that is part of the eXtended Life product line manufactured by King Koil (Comfort Solutions).


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