Vergo Comfort Visco Elastic Premium 2" Memory Foam Topper (Queen) Instantly enhances any mattress for more support, pressure relief and overall comfort. Get the benefits of a memory foam mattress without the price tag. 2-inch breathable ventilated memory foam with open-cell technology. Comes compressed and rolled for easy handling and expands upon unpacking. CertiPUR-US certified to assure topper has been tested and certified by an independent laboratory to meet specific criteria for physical performance, indoor emissions and environmental stewardship.