The mattress that broke the internet just got an upgrade. The Purple Hybrid mattress uses Purple’s patented Smart Comfort Grid™. The unique 2" top layer adapts to your body and stays cool for superior comfort, support, and better sleep. Purple has added a new base layer of individually wrapped responsive-support coils to enhance the overall comfort and durability of the mattress. The combination of the Purple Grid™ and patented responsive-support coils augment the responsiveness and open airflow for even more adaptive cool, No Pressure® Support. This mattress is perfect for sleepers who like their mattress a little on the firm side.Purple Smart Comfort Grid™ provides the perfect balance of firm and soft without compromise | The Purple Smart Comfort Grid™ is bordered with a high-density polyurethane foam to provide proper edge support | Soft flex, stretchy, and breathable mattress cover allows you to sink comfortably into bed | Open air channels and temperature-neutral materials for cooler sleep  | Motion isolating technology and responsive support coils base for superior comfort | Perfect for back and stomach sleepers | Allow 72 hours for mattress to fully decompress | 2" Hyper-Elastic Polymer™ material in Purple Smart Comfort Grid™ | Non-toxic polyethylene copolymer powder coating | 1" 2.0-lbs density polyurethane foam, 7.5" Pocketed Springs, CertiPUR-US certified foam base | Spot clean with mild detergent  | Fire retardant – non-toxic knit barrier | King dimensions: 76"x80"x11"