After years of research, we have finally come up with a selection of toppers to provide extra comfort to your existing mattress as well as help to keep you cooler at night. Revo 4th generation memory foam is used to provide additional air circulation by offering airflow 30 times greater than a premium memory foam mattress. Gel memory foam offers great results but Revo foam pushes this further for better results. If you suffer from heat discomfort at night then the Luxury 4th generation Revo memory foam mattress topper is the ideal solution for you.