Experience the comfort of the Primasleep mattress. This mattress includes 3 different layers which are I-GEL foam, convoluted foam and high density(HD) foam. Multi-layered foam construction creates sound sleep and conform to your body's shape and movements, resulting in a restful and rejuvenating night’s. In addition, there is a 10-year warranty, so buy it with confidence. Also, it will be delivered to you conveniently by matress in a box. Have a good night with Primasleep thinking about the environment and convenience.