SensorPEDIC Euro Top Quilted 12-Inch Gel Memory Foam Mattress, King, White King size mattress measures 75.5-by-79.5 Inch and 12-Inch thick; advanced ventilation process enhances breathability and sleeps cooler Top layer is a super soft gel-infused SensorAIR memory foam that's quilted to the cover for luxurious, airy comfort for cushioned full body support Middle layer Ventilated Sensor-FOAM memory foam provides therapeutic, pressure-relieving comfort that sleeps cooler and more comfortable all night Base layer is an 9-inch heavy-duty foam that provides ideal support for one or two sleepers, while extending the comfort and life of your mattress Heat dissipation fabric layer with VentAIR border and 300 gram-weight, triple layer circular-knit cover with COOLcloth fabric enhances breathability Made without ozone depleters. Made without PBDEs, TDCPP or TCEP (&#039;Tris) flame retardants. Made without mercury, lead, and other heavy metals. Made without formaldehyde. Made without phthalates regulated by the Consumer Product Safety Commission. Low VOC (Volatile Organic Compound) emissions for indoor air quality (less than 0.5 parts per million).