Casper's plush-top sequel to their award-winning mattress provides next-level comfort with seven-area Zoned Support™ atop spring coils for superior sleep. Open-cell foams have tiny pores to let excess hot air escape so you can stay cool, and they work together with three additional foam layers (high-density memory foam, zoned transition foam and durable support foam) to enable a perfect night's rest. Encased spring coils add lift, support and airflow.