Conforming Green Tea Memory Foam comfort and pressure relieving support for a better night's sleep, foam is CertiPUR - US Certified for durability, performance, and content3 inches Memory Foam, 2 inches Comfort Foam, 3.5 inches Airflow High-density Foam, 3.5 inches Airflow High-density Base Support FoamA safe and trustworthy anti-oxidant, Zinus infuses its memory foam products with natural green tea extract to maintain product freshnessSmartly Shipped - Our patented technology allows our mattresses to be efficiently compressed, rolled and shipped in a box conveniently to your doorQueen (L x W x H) 60 X 80 X 12 inches, 62.5 pounds, please allow up to 72 hours for the mattress to fully expand and for any potential odor to dissipateNOTE: Though our mattresses typically expand in 48 to 72 hours, they may take up to a week in some cases. Other factors, like cold weather, can also affect decompression times