Composed of 2-1/2-inch advanced viscoelastic memory foam on a 7-1/2-inch polyurethane base * Supportive 4-pound; density memory foam eliminates back and joint pain associated with most common innerspring mattresses * Includes 2 memory foam contour pillows an added bonus * Ultra-soft mattress cover is zippered for easy removal and washing * Memory foam is resistant to dust mites and is naturally antimicrobial and meets all flammability standards