This 10" premium quality Night Therapy Spring Mattress has a luxurious Pillow Top plush comfort layer on top of a core of hundreds of independent-operating springs. The result is a supremely comfortable mattress that is soft when you get into bed, yet super supportive throughout the night. The plush feel of this mattress begins with a rich poly-jacquard fabric that has a 1" backing of super soft foam. Right below that is another layer of 2" super soft and supportive foam. The outstanding support of this mattress comes from the hundreds of supple, independent-operating springs that provide the support your body needs. Since each spring works independently virtually every inch of your body gets a customized level of support, whether you sleep on your back, side or stomach. Each spring flexes as your body moves during sleep to provide the perfect amount of support. There is virtually no "motion transfer" from one part of the mattress to another. This means less disruptive sleep among sleep partners.