The Casper Original Hybrid Firm Mattress is engineered for sleepers who prefer a firmer, more supportive sleep surface. Combining advanced foam technology with Flex Coil Supportive Pocketed Springs, it delivers dependable support while maintaining responsive comfort throughout the night. The QuickCool™ Cooling Mattress Cover encourages airflow while AirScape® Cooling Foam with Phase Change Material helps draw heat away from the body, creating a cooler and more comfortable sleep environment. Three ergonomic support zones within the Zoned Support™ Pressure-Relieving Memory Foam help reinforce spinal alignment while providing targeted support across the body. The firmer comfort profile offers enhanced stability for back and stomach sleepers. Flex Coil Supportive Pocketed Springs respond independently to movement while helping minimize motion transfer. Working together with the foam comfort layers, they create a supportive hybrid mattress designed to promote consistent comfort and lasting support.