New Sealy posturepedic twin sized mattress. Mattress is Medium Firmness Made with premium immersive memory foam for back and posture support Dimensions: 74" L x 38" W x 11.5" H Comes with a black 5" Sealy base. Also comes with a Malouf comfort mattress protector which is made from a moisture-wicking and breathable rayon fabric made from bamboo.