Zotto Sleep Memory Foam Mattress, Queen Zotto's patent pending mixture of memory foam, gel and hybrid material provide continuous temperature regulation, proper spine alignment, pressure relief, localized bounce, and ultimate comfort! Zotto scored a higher rating than Casper and TuftandNeedle in reviews performed by Memory Foam Talk, Sleep Sherpa, and Sleepopolis Our poly-rayon cover is soft as silk and durable enough to handle anything life throws its way! Its also removable and machine washable Zotto is proudly made in the USA and is backed by a 10 Year Warranty Doctor endorsed for back and joint pain relief and recently featured by Access Health Airing on Lifetime Television