Extra firm and luxuriously supportive, the iComfort Blue 300 offers an indulgent, restorative sleep experience. Combining TempActiv gel memory foam technology with EverCool Fuze memory foam, this firm mattress delivers refreshing cooling comfort with conforming pressure point relief. A layer of Deep Reaction memory foam provides deep support not usually found in memory foam mattresses that allows you to wake feeling refreshed and rejuvenated. 10 Year Warranty.