Shop for Firm Mattresses - Firm Mattress 

Often a popular choice, a firm mattress has less give and provides a more solid feel. Like a stable office desk chair, a firm mattress will provide enhanced support with a steady, consistent feel. When shopping for a firm mattress don't think you have to purchase something that feels like a brick.  One of our best choices in a firm mattress can be found in our Extented life collection.  It's great to find a mattress sale to find your perfect firm mattress, you can find retail stores that carry King Koil firm mattresses on the store locator tab at the top of the page.

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Addison Firm

What is Sleep iD?

Sleep iD is the result of extensive research between King Koil and the ICA. We have analyzed hundreds of people of all body types with varying sleep habits to learn which mattress construction properly supports different profiles of sleepers. You should try it!

Launch Sleep iD

Comfort Index

We understand finding the right comfort surface is a personal preference and may vary among retailers. To achieve the right feel for you, we suggest you determine your needed support through Sleep iD and rest test mattresses at your nearest King Koil dealer.

softest
firmest

Kaitlyn Firm

What is Sleep iD?

Sleep iD is the result of extensive research between King Koil and the ICA. We have analyzed hundreds of people of all body types with varying sleep habits to learn which mattress construction properly supports different profiles of sleepers. You should try it!

Launch Sleep iD

Comfort Index

We understand finding the right comfort surface is a personal preference and may vary among retailers. To achieve the right feel for you, we suggest you determine your needed support through Sleep iD and rest test mattresses at your nearest King Koil dealer.

softest
firmest

Katherine Firm

What is Sleep iD?

Sleep iD is the result of extensive research between King Koil and the ICA. We have analyzed hundreds of people of all body types with varying sleep habits to learn which mattress construction properly supports different profiles of sleepers. You should try it!

Launch Sleep iD

Comfort Index

We understand finding the right comfort surface is a personal preference and may vary among retailers. To achieve the right feel for you, we suggest you determine your needed support through Sleep iD and rest test mattresses at your nearest King Koil dealer.

softest
firmest

XS 10

What is Sleep iD?

Sleep iD is the result of extensive research between King Koil and the ICA. We have analyzed hundreds of people of all body types with varying sleep habits to learn which mattress construction properly supports different profiles of sleepers. You should try it!

Launch Sleep iD

Comfort Index

We understand finding the right comfort surface is a personal preference and may vary among retailers. To achieve the right feel for you, we suggest you determine your needed support through Sleep iD and rest test mattresses at your nearest King Koil dealer.

softest
firmest

Lancaster Firm

What is Sleep iD?

Sleep iD is the result of extensive research between King Koil and the ICA. We have analyzed hundreds of people of all body types with varying sleep habits to learn which mattress construction properly supports different profiles of sleepers. You should try it!

Launch Sleep iD

Comfort Index

We understand finding the right comfort surface is a personal preference and may vary among retailers. To achieve the right feel for you, we suggest you determine your needed support through Sleep iD and rest test mattresses at your nearest King Koil dealer.

softest
firmest

Estelle Luxury Firm

What is Sleep iD?

Sleep iD is the result of extensive research between King Koil and the ICA. We have analyzed hundreds of people of all body types with varying sleep habits to learn which mattress construction properly supports different profiles of sleepers. You should try it!

Launch Sleep iD

Comfort Index

We understand finding the right comfort surface is a personal preference and may vary among retailers. To achieve the right feel for you, we suggest you determine your needed support through Sleep iD and rest test mattresses at your nearest King Koil dealer.

softest
firmest

Extended Life 200 Firm

What is Sleep iD?

Sleep iD is the result of extensive research between King Koil and the ICA. We have analyzed hundreds of people of all body types with varying sleep habits to learn which mattress construction properly supports different profiles of sleepers. You should try it!

Launch Sleep iD

Comfort Index

We understand finding the right comfort surface is a personal preference and may vary among retailers. To achieve the right feel for you, we suggest you determine your needed support through Sleep iD and rest test mattresses at your nearest King Koil dealer.

softest
firmest