Your body will thank you for choosing one of Royal Pedics 7-Zone natural latex mattresses, which combine shoulder and hip flexibility with correct support for the lower back. This 7-Zone natural latex mattress is Royal Pedics plusher latex version. The surface of the mattress is quilted, rather than tufted, so the latex is in a more relaxed state. The Royal Latex Quilt-Top Mattress is Royal Pedics softest available, yet still provides support due to the firmer lumbar zone preventing the spine from sagging. This mattress is also our best recommendation for a platform bed because it still contours well to the body on a hard surface. The overall height from the top of the mattress to the floor on our 8" box spring and 7 1/4" frame is about 23". The mattress features Royal-Pedics 7-Zone natural latex core, which was designed based upon sleep studies at the Kirschgartenclinic in Basel, Switzerland by Swiss researcher and sleep specialist Dr. Dietrich Schneider-Helmert. The 7-Zone design was found to provide optimal sleeping comfort and ergonomic support to all parts of the body. The latex core is contained in quilted Belgian 100% cotton covering, utilizing untreated French lambs wool and hypoallergenic Comfort Fill 7 to provide a plush and comfortable feel. Royal-Pedic Box Spring construction is the finest available. It provides 22% more coils than is standard for extra support and durability, and has 50% more coils located in the center-third of the box spring to support the body where its needed most. Mattress thickness is 8". Mattress Dimensions: Twin, 38 in x 75 in; Twin XL, 38 in x 80 in; Full, 53 in x 75 in; Queen, 60 in x 80 in; King, 76 in x 80 in; California King, 72 in x 84 in. Warranty: Manufacturer warranties item against defects in both material and workmanship. 10 years for mattresses/boxsprings.