Enjoy a better night’s sleep with the comfort and exceptional support of the exclusive 30.5 cm (12 in.) Blackstone memory foam mattress. This Blackstone mattress is made with green tea, ActivCharcoal and BioFoam. It provides customized support and conforming comfort with memory foam and comfort foam that matches the natural shape of your body. This results in a customized spinal alignment and a more restorative night’s sleep. The Airflow high-density base support foam layer provides long lasting durability and stability. Please open your mattress package within 72 hours of receipt and enjoy a better night’s sleep that same night.