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King Memory Foam Mattresses

All mattresses

23 king memory foam mattresses from Novilla, Nectar, Sweetnight and more. Most cost $270 to $3,799, and half cost less than $450.

King mattresses whose title says memory foam: foam throughout, no coils.

We do not pick by hand: a mattress is here because its listed specs pass the checks.

Top brands: Novilla (9)

All filtersFilters (1)×
Cooling: Cooling  ×Clear all
BrandNovilla9Tempur-Pedic2Casper1Egohome1Nectar1Opoiar1Sweetnight1
SizeKing23
TypeMemory Foam23
FirmnessMedium Firm7Firm3Medium3
Thickness11 to 12 in913 in and up68 to 10 in6
CoolingCooling23
In a boxIn a box10
PriceUnder $3003Under $4003Under $5004Under $6001Under $9001$300 & above12$400 & above9$1,500 & above3$3,000 & above3
Clear allShow 23 mattresses
Cooling: Cooling  ×23 resultsSort byRecommendedSpec scorePrice: low to highPrice: high to low
Novilla

King, Memory Foam, 13 in and up

+CertiPUR-certified memory foam
+Ships boxed for easy home delivery
+Cooling design with gel memory foam
−Heavier than thinner king mattresses
$365.48-21%List: $459.99
as of 11/04/2026 00:28 PST - Details
Novilla

King, Memory Foam, Medium Firm, 13 in and up

+King size fits two sleepers comfortably
+CertiPUR-US certified foam
+AiryFlow cooling system for cooler sleep
$467.48-15%List: $549.99
as of 11/04/2026 00:28 PST - Details
Novilla

King, Memory Foam, 11 to 12 in

+CertiPUR-certified memory foam
+Ships boxed for easy home delivery
+Cooling design with gel memory foam
−Heavier than thinner king mattresses
$369.99
as of 11/04/2026 00:28 PST - Details
Tempur-Pedic

King, Memory Foam, Firm, 11 to 12 in

+King size fits larger beds and two sleepers
+Cooling cover for hot sleepers
+All memory foam construction
−Firm feel may not suit side sleepers seeking softness
$3,799.99
as of 11/04/2026 05:39 PST - Details
Generic

King, Memory Foam, Medium, 8 to 10 in

+King size fits a large bed frame
+CertiPUR-US certified memory foam
+Cooling gel memory foam construction
−Thicker than an 8-inch mattress, which may need deeper sheets
No price recorded yet.
Generic

King, Memory Foam, Medium Firm, 8 to 10 in

+King size for wide sleeping space
+Charcoal infused memory foam
+Cooling feature for a cooler sleep surface
−Under 10 inches thick, thinner than some memory foam options
No price recorded yet.
Generic

King, Memory Foam, Firm, 8 to 10 in

+King size fits two sleepers or a larger frame
+Memory foam conforms to the body
+CertiPUR-US certified foam
−Firm feel may feel hard for side sleepers
No price recorded yet.
Generic

King, Memory Foam, 8 to 10 in

+Cooling gel memory foam listed for a cooler sleep
+Carbon cooling feature listed in the product name
+10 inch thickness is a common comfortable profile
−Narrow king dimensions differ from a standard king mattress
No price recorded yet.
Nectar

King, Memory Foam, Medium Firm, 13 in and up

+King size for larger bedrooms and couples
+Split King option for adjustable bases
+Contouring memory foam construction
−Heavy king size is difficult to move alone
$3,036.00
as of 11/04/2026 00:21 PST - Details
Novilla

King, Memory Foam, 13 in and up

+CertiPUR-certified memory foam
+Ships boxed for easy home delivery
+Cooling design with gel memory foam
−Heavier than thinner king mattresses
$449.99
as of 11/04/2026 00:28 PST - Details
Generic

King, Memory Foam, 11 to 12 in

+King size fits a large bed frame
+CertiPUR-US certified memory foam
+Open-cell foam designed for breathability
−Thick 11 to 12 inch profile is taller than standard mattresses
No price recorded yet.
Generic

King, Memory Foam, Medium Firm, 8 to 10 in

+King size fits two sleepers or a larger frame
+Memory foam conforms to the body
+Charcoal infusion with cooling feature
−Memory foam can trap heat unless cooling feature works
No price recorded yet.
Generic

King, Memory Foam, 11 to 12 in

+Cooling green tea gel memory foam
+CertiPUR-US certified memory foam
+Fiberglass free cover
−Extra firm feel may be too hard for many sleepers
No price recorded yet.
Sweetnight

King, Memory Foam, Medium, 11 to 12 in

+Cooling feature listed for warmer sleepers
+CertiPUR-US certified foam
+5-zone ergonomic support design
$449.99
as of 11/04/2026 05:36 PST - Details
Novilla

King, Memory Foam

+CertiPUR-certified memory foam
+Cooling design for warmer sleepers
+King size fits larger beds
$309.99
as of 11/04/2026 00:28 PST - Details
Opoiar

King, Memory Foam, 8 to 10 in

+King size fits two sleepers or a larger bed frame
+CertiPUR certified foam for lower chemical emissions
+Green tea gel memory foam with cooling feature
No price recorded yet.

Compare specs

mattressSizeTypeFirmnessThicknessSpec scorePrice
KingMemory Foam13 in and upn/a$365.48
as of 11/04/2026 00:28 PST - Details
KingMemory FoamMedium Firm13 in and upn/a$467.48
as of 11/04/2026 00:28 PST - Details
KingMemory Foam11 to 12 inn/a$369.99
as of 11/04/2026 00:28 PST - Details
KingMemory FoamFirm11 to 12 inn/a$3,799.99
as of 11/04/2026 05:39 PST - Details
KingMemory FoamMedium8 to 10 inn/aNo current price
KingMemory FoamMedium Firm8 to 10 inn/aNo current price
KingMemory FoamFirm8 to 10 inn/aNo current price
KingMemory Foam8 to 10 inn/aNo current price
KingMemory FoamMedium Firm13 in and upn/a$3,036.00
as of 11/04/2026 00:21 PST - Details
KingMemory Foam13 in and upn/a$449.99
as of 11/04/2026 00:28 PST - Details

Before you buy

Other uses

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Popular filters

Mattresses in a Box221Cooling Mattresses191Hybrid Mattresses185Medium Firm Mattresses169Queen Mattresses137Memory Foam Mattresses13611- to 12-Inch Mattresses1218- to 10-Inch Mattresses108

Mattresses by use

Queen Hybrid Mattresses77Queen Memory Foam Mattresses45King Hybrid Mattresses57Twin Memory Foam Mattresses46Thick Hybrid Mattresses73

Spec scores, pros and cons, and prices are explained in the How it works section of the About page.