Comfort level: plush Memory foam nfused with charcoal and green tea extract for a refreshing and invigorating sleep experience Firm support foam Dual ventilation technology Micro cool technology coved 10-year non-prorated warranty Note: Purchasing mattress and foundation from two different brands may void warranty; check warranty for details Adjustable base compatible Foundationbox spring available, sold separately State recycling fee may apply Hypoallergenic: made from materials that don?t trigger allergies Mattress ships in a box; please allow 48 hours for your mattress to fully expand after opening