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King Memory Foam Mattresses

All mattresses

10 king memory foam mattresses from Novilla, Nectar, Sweetnight and more. Most cost $446 to $1,695, and half cost less than $479.

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.

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
Mlily

King, Memory Foam, Medium Firm, 11 to 12 in

+Full 12 inch thickness for deep support
+CertiPUR-US certified memory foam
+Copper gel infused foam
−Medium firm feel may not suit those wanting softer support
$489.99
as of 11/04/2026 18:36 PST - Details
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.
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
Casper

King, Memory Foam, Medium Firm, 11 to 12 in

+CertiPUR-US certified foam
+King size gives room for two sleepers
+Medium firm feel suits back and stomach sleepers
−Memory foam can trap heat compared with hybrid designs
$1,695.00
as of 11/04/2026 14:42 PST - Details
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.
Signature Design by Ashley

King, Memory Foam, Medium Firm, 11 to 12 in

−Cooling not listed: 23 of the 33 here list one
$449.99
as of 11/04/2026 02:41 PST - Details

Compare specs

mattressSizeTypeFirmnessThicknessSpec scorePrice
KingMemory FoamMedium Firm13 in and upn/a$467.48
as of 11/04/2026 00:28 PST - Details
KingMemory FoamMedium Firm11 to 12 inn/a$489.99
as of 11/04/2026 18:36 PST - Details
KingMemory FoamMedium Firm8 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 FoamMedium Firm11 to 12 inn/a$1,695.00
as of 11/04/2026 14:42 PST - Details
KingMemory FoamMedium Firm8 to 10 inn/aNo current price
KingMemory FoamMedium Firm11 to 12 inn/a$299.99
as of 11/04/2026 18:36 PST - Details
KingMemory FoamMedium Firm11 to 12 inn/a$449.99
as of 11/04/2026 02:41 PST - Details
KingMemory FoamMedium Firm11 to 12 inn/a$445.88
as of 11/04/2026 00:28 PST - Details
KingMemory FoamMedium Firm13 in and upn/a$599.99
as of 11/04/2026 00:28 PST - Details

Before you buy

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