Enjoy the comfort and support of Green Tea Memory Foam. The Sleep Master Memory Foam 6 Inch Green Tea Mattress provides conforming comfort with a Memory Foam layer that conforms to the natural shape of your body. The Airflow High-density Base Support Foam provides long lasting durability and stability. Please open your mattress package within 72 hours of receipt and allow 48 hours for your new mattress to return to its original, plush shape. Worry free 10 year limited warranty. Another comfort innovation from Zinus.