Serta ThermaGel Cooling, Pressure-Relieving Memory Foam Mattress Topper, 3 Inch, California KingSleep like youve never slept before on this mattress topper from Serta. As part of the Serta family of comfort solutions, this ThermaGel memory foam topper can improve any nights rest on top of virtually any mattress. This adaptable mattress pad conforms to the sleepers unique body shape to provide superior support for joints and pressure points while remaining breathable with ThermaGel particles to keep the sleeping surface cool all night long. ThermaGel is a trademark of Leggett & Platt, Inc.100% Memory FoamBreathable gel infused memory foam engineered for comfort and supportThermaGel particles help provide a cool, comfortable sleep surfaceAdapts and conforms to the individual contours of the body to provide enhanced support and comfortEnhances the sleep surface and extends the life of your mattressMade in the USAProduct informationBrandSertaColor3-inchSizeCalifornia KingFabric Type100% Memory FoamSpecial FeatureCooling, Durable, Premium, Pressure Relief, BreathableClosure TypePull OnProduct Care InstructionsSpot Clean OnlyWater Resistance LevelNot Water ResistantAge Range (Description)All AgesMaterialMemory FoamModel NameThermaGelManufacturerElite Comfort SolutionsUPC094325278886Product Dimensions83 x 71.01 x 3 inchesItem Weight22.3 poundsCountry of OriginUSAItem model number12276Refillmemory-foam, gelAssembly requiredNoBatteries requiredNo