Simmons Mattress Slumber Time Cosmic Swirl Firm RiteHeight Twin Mattress: * Supportive sleeping surface * Single-sided design; mattress never needs to be flipped * Allergen reducing; helps reduce indoor allergens on the mattress surface * Firmer seating edge * Tough as nails coil support system * Heavy gauge, tempered coils * Premium foam layers for ideal comfort * Soothing damask fabric is super lightweight * Fabric helps to repel wetness * Accidents clean up easier and faster * 3-year limited warranty * Dimensions: 74.5"L x 38"W x 7"H * Coil count: 252 * Beds sold separately. See our assortment of beds. * Bed frames sold separately. See our assortment of bed frames.