Serta Mattress Cascade Range Extra Firm Mattress - King

The Serta Mattress Cascade Range Extra Firm Mattress in King size delivers superior support through its Q4 Support System featuring 860-density 4-in-1 coils that distribute weight evenly while maintaining durability for years to come. The innovative 5-zoned comfort design alternates between firm and plush areas to cradle your body's natural curves, particularly along your spine. CoolFeel fabric incorporates advanced cooling technology to regulate temperature throughout the night, while a layer of Serta HD support foam provides the perfect balance between cushioning comfort and firm support. Compatible with adjustable bases, this mattress lets you customize your sleeping position for reading, watching TV, or finding your ideal sleep angle for maximum comfort and restful sleep.