Sleep Innovations Supreme Elegance 12-Inch Memory Foam Mattress, Full Size 12-inch memory foam mattress with exclusive 3-layer construction Three layers of premium foam; top comfort layer 1-inch of extra-soft premium memory foam; middle support layer 2-1/2-inch of premium memory foam treated with surefresh for lasting freshness; bottom core layer 8-1/2-inch of premium base foam for stability Relieves painful pressure points and reduces motion transfer so that you can sleep undisturbed After unpacking, allow up to 72 hours for mattress to fully expand; Spot clean only Mattress measures 75-inches long by 54-inches wide by 12-inches high