BAMBOO CHARCOAL INFUSION -provides superb ventilation ability and reduces temperature from risingSTATE OF THE ART MEMORY FOAM - provides quality seating comfort and pain reliving experienceNEWLY MODIFIED COVER - allows a maximum air flow with non-slip feature5 YEAR WARRANTY - comes with 5 year warranty and 30 days no hassle returnSPECIAL TEMPERATURE SENSITIVE TECH -Because of the SPECIAL quality memory foam material, the cushion will be HARD when the temperature is low. It will become very SOFT and COMFORTABLE after 5 minutes usage.