Mattress City the Official Home of Smartlife Mattresses by King Koil!

King Koil is one of the top mattress manufacturers in the world, and Mattress City is pleased to be the home in the Pacific Northwest of the Smartlife Series by King Koil. King Koil has developed a sleep system that adjusts to your unique body size and continuously adapts to the way you move.


Smartlife features patented body sensing technology that adjusts to your body while you sleep, giving you support and comfort where you need it. Smartlife’s Smart Cell Technology includes over 80 individual Smart Cells in eight independently controlled zones using thousands of algorithms to give your unique body the support and comfort it needs. Find the Smartlife Mattress by King Koil at any Puget Sound Area, Mattress City location.


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