Olee Sleep 12 Inch Euro Box Hybrid Memory Foam Innerspring Mattress (King) 12SM01K

Amazon.com Price: $799.99 $339.00 (as of 18/10/2017 18:57 PST- Details)

7.5 inch Heat Treated Coil maintains mattress firmness constantly
1.5 inch Soft memory foam supports and surrounds your body shape
1 inch High density foam absorbs and disperse your weight.