DreamFoam 3" Gel Swirl Memory Foam Topper, Cal King 3" thick memory foam mattress topper with gel swirl The soft visco-elastic memory foam will add comfort to an existing mattress and increase the quality of sleep immediately. Cooling Gel is infused directly into the foam Foam is Certi-Pur US certified and meets the highest standards for quality 3 Year Warranty -- Proudly Made in the USA