The CASPER Cooling Select 12" Hybrid Medium Firm Mattress combines supportive spring construction with pressure-relieving foam layers for a comfortable, balanced sleep experience. Featuring a 12-inch profile, individually wrapped coils, and cooling materials designed to help manage heat, this hybrid mattress offers a blend of cushioning, support, and temperature comfort. Its medium-firm feel provides a versatile balance for a variety of sleep preferences, while the combination of foam and springs helps promote a supportive, restful night's sleep.