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Serta Perfect Sleeper Express 12" King Mattress in a Box

Item# 08299939000P | Model# 50085748-8060 | Added on April 8, 2018 |
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Description Specifications
Unbox Your Best Sleep Yet Find all the mattress features you need in one convenient package with the Serta Perfect Sleeper Express 12" king mattress in a box. This memory foam mattress fights common sleep problems, including tossing and turning, unbalanced temperature, sagging, lack of support and partner movement, with three layers of comfort and a CoolFeel™ cover. Advanced gel memory foam material combined with a classic foam core delivers the firm support you want with a cushioned, contouring feel.

Contoured Comfort

  • Best for back and side sleepers who prefer a soft feel with solid support
  • Firm comfort without feeling rigid, thanks to materials that cradle with custom contouring
  • All-foam design offers three layers of comfort to help solve many of the most common sleep problems
  • Personalized support, reduced motion transfer and cooling technology promote deeper, more restful sleep

Triple Support

  • Absorbs the motion when your partner moves so you won't be awakened in the middle of the night
  • Premium gel memory foam layer helps reduce heat buildup along the sleep surface
  • Gel-infused support foam for additional full-length cushioned comfort
  • Serta Foam Core for proper alignment and posture throughout the night

Keeps You Cool

  • Cool-to-the-touch breathable knit cover with cooling you’ll feel the moment you lie down
  • Gel foam combines with cover material to redirect heat from both sides of the surface

Set Up & Sleep

  • Packaged for delivery right to your door
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Those benefits were not conditioned on the positive or negative content of the review.

Twin extra wide


Looking for a twin extra wide

September 9th via mobile
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Overall a good mattress


I have always had a traditional spring mattress until I got this one. I woke up multiple times a night to toss and turn because my back hurt. With this mattress my back doesn't hurt anymore and I have actually slept through the night every night since I have had it. The only issue I have is the the cool cover, that is supposed to keep the mattress cool, doesn't work that well. The memory foam retains body heat and while I don't wake up sweating it still doesn't keep me as cool as I thought it would. The mattress is unbelievably soft but is still firm as well. You don't feel like you sink into it, it perfectly conforms to your body and then bounces right back to shape when you get up. It is thick enough to use both with or without a box spring. I would definitely recommend this mattress!

July 17th via mobile | The reviewer indicated they received a sample of this product
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I am 75 years young...had the box delivered to my porch, dragged it into my it out of the box and onto my bed with no help!! Love the way it expands so quickly. I have been sleeping on it for 30 nights. I have always had problems with one hip and got no relief going to a chiropractor...I am feeling NO pain at all now...I would buy this mattress again and will absolutely recommend it to friends! Thank you for choosing me to review this wonderful product!

July 6th via | The reviewer indicated they received a sample of this product
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Everything as Advertised


I have had back issues since junior high school and since I have now passed 70, that tells you all you need to know. First this mattress was very easy to deal with when placing it on my bed. Secondly, my current mattress was dated and in need of a replacement. Could not have chosen a better replacement. Wake up without the daily routine of leg and back pain. Makes starting my day a much more pleasurable experience and really vitalizes my attitude. When you wake up refreshed after a good night's sleep, it just sets the tone for the entire day. I am very pleased with this mattress and recommend it highly.

July 4th via | The reviewer indicated they received a sample of this product
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Amazing mattress, great memory foam


When we received the Serta Perfect Sleeper 12" Mattress in a Box, they aren't kidding. It really arrived in a box --- an 85+ pound box. Luckily, the delivery person helped me drag it into the living room, after which I dragged it to the bedroom.

It was very simple to set up the mattress. It was on my bed within 15 minutes. I relaxed on it for a bit, and it definitely felt better than other mattresses that I have used. This one felt like it had more "springback", which is a good thing when I actually want to get out of the bed.

I have been sleeping well ever since I have placed it on my bed.

June 29th via | The reviewer indicated they received a sample of this product
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