Serta Perfect Sleeper X Knox Firm Mattress

A great choice for those who prefer a classic, quilted feel, experience premium support and perfect sleep with the Serta Quilted Perfect Sleeper X Knox firm mattress. It features 5 support zones for full-body spinal alignment with responsive coils and graphite-infused memory foam, plus cooling technology. Extraordinary sleep is possible, with Serta Quilted Perfect Sleeper X.