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Serta King Mattress

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Each Serta king size mattress benefits from time honored tradition as well as new and innovative features that can provide you with the quality and rejuvenating sleep you need. 


Whether you prefer the embracing comfort of a super plush or pillow top, the conforming fit of heavenly memory foam or the steady support of a firmer feel, Sit ‘n Sleep will help you find the Serta king mattress that’s perfect for you and your sleep needs. In addition to our competitive pricing and frequent sales, we also offer great deals on adjustable bases and in many cases an included box spring.


Browse Our Selection of King Size Serta Mattresses


Considering we spend nearly a third of our lives in bed, choosing the right mattress for you is an important decision. Having a Serta king size mattress that suits your sleep personality can help you get better sleep, which in turn can help you feel more well rested and energized for the day. With their high quality king mattresses, Serta offers you incredible comfort with a name you can trust.


Sit ‘n Sleep carries many of the mattresses from the Serta Perfect Sleeper line, including the Garland Firm, which is the only official mattress of the National Sleep Foundation (NSF), designed with their guidance to help address the most common sleep problems. This Serta king size mattress also features Serta’s innerspring design to promote proper back support and undisturbed sleep with the support and stability of their continuous coil technology and the advanced TrueSense coil design.


If you’re in search of cradling comfort, we offer a wide selection of pillow top Serta king mattresses, including the iSeries Honoree Super Pillow Top. Featuring the exclusive Cool Action Dual Effects Gel Memory Foam to help relieve pressure while providing targeted support and enhanced cooling comfort, this popular Serta king mattress Pillowsoft foam for gentle cushioning.


The iComfort Genius EverFeel combines Serta’s Cool Action Dual Effects Gel Memory Foam and EverFeel Technology for contouring, pressure-relieving comfort. This premium memory foam Serta mattress king offers the comfort and support of their popular Savant series, but with slightly more firmness.


Whether you’re looking for memory foam, pillow top and plush, or firm king mattresses, Serta offers you the comfort and support you seek, and Sit ‘n Sleep is here to help you find the mattress that’s right for you at an affordable price.