Name: Serta® perfectsleeper X™ Knox 13.5" Hybrid Firm Quilted Tight Top King Mattress
Brand: Serta Perfect Sleeper X
SKU: 1577278
Price: 2099 USD
Availability: InStock
Rating: 4.7 (180 reviews)

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Serta® perfectsleeper X™ Knox 13.75" Hybrid Plush Quilted Tight Top Twin XL Mattress

Experience premium support and perfect sleep with our new Serta® Quilted Perfect Sleeper X™ Collection. Our 5 ZoneResponse™ Design is comprised of Perfect Conform™ Memory Foam paired with 5-zoned coils for full-body alignment. Sleep comfortably cool throughout the night with cooling technology and graphite-infused memory foam designed to redistribute heat away from your body.

Serta® perfectsleeper X™ Lexton 14.25" Hybrid Medium Quilted Pillow Top Twin XL Mattress

Serta® perfectsleeper X™ Knox 13.75" Hybrid Plush Quilted Tight Top Queen Mattress

Serta® perfectsleeper X™ Lexton 14.25" Hybrid Medium Quilted Pillow Top Queen Mattress

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Mattress Delivery What To Expect with Captions

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Serta® perfectsleeper X™ Knox 13.5" Hybrid Firm Quilted Tight Top King Mattress

A quilted top offers a classic feel and added layer of plush foam. Xtraordinary sleep is possible, with Serta® Quilted Perfect Sleeper X™.

Firm - Ideal for stomach and back sleepers with extra support

Our 5 ZoneResponse™ Design combines coils and contouring memory foam for full body spinal alignment

Our PerfectConform™ Memory Foam contours and cradles your pressure points for rejuvenating sleep

CoolFeel™ System - Cooling technology keeps you comfortable throughout the night

Made to Order in the USA – Expertly crafted and assembled in U.S. factories using a blend of American-made and imported materials, guaranteeing exceptional quality and care

....Serta has been in the sleep industry for over 90 years and has been dedicated the entire time to helping people like you find a solution to your sleep problems so you can finally sleep better than you ever have. We love helping people find their best sleep and this is why our brand exists.

We believe that mattress shopping shouldn’t be stressful. We also believe whether you are buying online or in-store, you should be comfortable during the entire purchase process. So no matter if you're a back, stomach or side sleeper or if you sleep at night or during the day, we have a product to help you get the sleep you deserve. Check out some of the things we’ve learned along the way that help us to continue to be able to bring new sleep innovations to the table.

*Mattress only, all other products sold separately. Images may not depict actual size.

Serta Presidents Day 2026 Promo

Serta® perfectsleeper X™ Excelled 13.75" Hybrid Extra Firm Quilted Tight Top King Mattress

Serta® perfectsleeper X™ Knox 13.75" Hybrid Plush Quilted Tight Top Full Mattress

Serta® perfectsleeper X™ Lexton 14.25" Hybrid Medium Quilted Pillow Top Full Mattress

Serta® perfectsleeper X™ Knox 13.75" Hybrid Plush Quilted Tight Top King Mattress

Serta® perfectsleeper X™ Lexton 14.25" Hybrid Medium Quilted Pillow Top King Mattress

Serta® perfectsleeper X™ Knox 13.75" Hybrid Plush Quilted Tight Top California King Mattress

Serta® perfectsleeper X™ Lexton 14.25" Hybrid Medium Quilted Pillow Top California King Mattress

Plush - Great for side sleepers for extra comfort at the shoulders, hips and lower back

Serta has been in the sleep industry for over 90 years and has been dedicated the entire time to helping people like you find a solution to your sleep problems so you can finally sleep better than you ever have. We love helping people find their best sleep and this is why our brand exists.