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Serta Sleeptrue Medium 12" Full Hybrid Mattress in a Box, Cooling, Breathable, and Pressure Relieving - 100 Night Trial, CertiPUR-US Certified and 10 Year Limited Warranty

  • Based on 199 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, May 20
Order within 9 hours and 38 minutes
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Style: Hybrid Medium 12"


Size: Full


Features

  • SUPPORT ZONES - Featuring 3 Support Zones designed to deliver support where you need it most, delivering exceptional lower back care and a better nights sleep
  • COOL TWIST GEL MEMORY FOAM - No one likes to sleep hot, that is why use cooling gel swirled into premium memory foam. This offers enhanced airflow, heat dissipation, and contouring comfort
  • BREATHABLE HIGH-QUALITY MATERIALS - A soft, breathable cover promotes airflow and helps you rest and wake up refreshed while our Pillow Soft Aire foam layer offers enhanced cushioning for exceptional comfort and airflow. High quality materials give the mattress a premium look and feel and feel
  • SIMPLE PACKAGING AND DELIVERY - Compressed and packed neatly in a box that is delivered right to your door. Just open the box, unroll and unwind. It is normal for the mattress to take up to 72 hours to fully expand and one to two weeks to air out

Description

Designed with cooling gel memory foam, this mattress seamlessly blends value and convenience with the durability and trusted comfort Serta is known for. This collection offers all-foam and hybrid designs with 3 zones for lower back support and breathable fabric, so you wake up refreshed. This Serta Mattress- in-a-Box collection delivers comfort at a value with convenient delivery—so you can rest easy night after night. Only available in select Serta models.

Brand: Serta


Size: Full


Product Dimensions: 74.5"L x 53"W x 12"Th


Item Weight: 37.43 Pounds


Item Firmness Description: Medium


Top Style: Tight Top


Cover Material: Fabric (likely a blend of cotton, polyester, or other common mattress cover materials)


Number of Layers: 4


Fill Material: Gel Memory Foam


Special Feature: Breathable, Durable, Pressure Relief, Temperature Regulating


Item Firmness Description: Medium


Number of Layers: 4


Additional Features: Breathable, Durable, Pressure Relief, Temperature Regulating


Mattress Coil Type: Pocketed Coil


Construction Type: Hybrid


Number of Mattress Coils: 800


Is Customizable?: No


Portable: No


Is Foldable: No


Size: Full


Item Dimensions L x W x Thickness: 74.5"L x 53"W x 12"Th


Item Weight: 37.43 Pounds


Item Dimensions: 18 x 38 x 44 inches


Item Depth: 12 inches


Cover Material: Fabric (likely a blend of cotton, polyester, or other common mattress cover materials)


Fill Material: Gel Memory Foam


Product Care Instructions: In order to protect your mattress from stains and spills, we recommend using a mattress protector. This will also help with the overall health and lifespan of your mattress., To clean your mattress, we suggest applying baking soda to the soiled area and letting it stand for about 15 minutes. Then, vacuum and repeat as needed. It's important that you also air the product out as much as possible., We do not recommend applying liquids to the product. Applying liquids may stain the fabric and could potentially make the soiled area worse. Moisture or chemicals applied directly to the mattress can cause premature breakdown of the foam and damage the product.


Mattress Comfort Layer Material: Gel Memory Foam


Material Type: Gel Foam, pocketed coils


Brand Name: Serta


Model Name: Serta 12" Hybrid Medium SleepTrue Mattress in a Box


Product Benefits: Back Pain Relief, Improves Sleep, Pressure Relief, Reduces Toss & Turn


Model Number: 50


UPC: 198167024974


Mattress Type: Standard Mattress


Manufacturer: Serta Simmons Bedding, LLC.


Set Name: Serta Mattress-in-a-Box


Manufacturer Part Number: 50


Unit Count: 1.0 Count


Included Components: Mattress


Age Range Description: Adult


Item Type Name: Bed Mattress Conventional


top-style: Tight Top


Color: Light Blue


Style Name: Hybrid Medium 12"


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, May 20

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Comfortable
Style: Hybrid Medium 12" Size: Full
We bought this bed to move my toddler into his first big boy bed. Great quality, extremely comfortable and perfect for when mom or dad end up falling asleep in there as well lol. True to size and will last us many years to come.
Reviewed in the United States on December 2, 2025 by Melanie Moore

  • Most comfortable bed!
Style: Hybrid Medium 12" Size: King
The most comfortable bed I have ever slept on worth the money!
Reviewed in the United States on October 4, 2025 by Anonymous

  • Slept comfortably the first night.
Style: Hybrid Medium 12" Size: King
Best sleep I have had in years, also expands in about an hour.
Reviewed in the United States on January 6, 2026 by Babs

  • Good product for the price
Style: Hybrid Medium 12" Size: Full
This mattress came packed in a box about the size of a footlocker. Unbelievable they could shrink something like that. Once it was unwrapped and exposed to air it expanded quite quickly although they said it might take day day and a half but it didn't. The mattress is a little softer than I would like however it is very comfortable. ... show more
Reviewed in the United States on August 29, 2025 by JRL

  • Mattress
Style: Hybrid Medium 12" Size: King
I love Serta brand so much! I haven't found anything I dislike from them. I think the bed is perfect. I would have done a smaller size if I knew how tall my bedframe would be but if you like/need a higher bed, this is perfect!!
Reviewed in the United States on March 25, 2026 by Maddy

  • Eliminated My Back & Shoulder Issues
Style: Hybrid Medium 12" Size: Full
I suffer from rotator cuff issues in both shoulders and chronic lower back pain from years of being rode hard and put up wet...This Serta mattress has eliminated any need for a chiropractor! Highly recommended!!!
Reviewed in the United States on April 27, 2026 by Eric D. Riehle

  • My mattress in a box
Style: Hybrid Medium 12" Size: Full
First time buying a mattress in a box. However the mattress is just wonderful. It is a good sleeping mattress.
Reviewed in the United States on April 6, 2026 by A. Haith

  • Got 3 weeks out of this then woke up in a moon crater!!
Style: Hybrid Medium 12" Size: Full
UPDATED I had to come back and change my review due to mattress after 3 weeks of use. I did set up the mattress like I read. I EVEN waited 3 days before sleep on it. This mattress was great for just over 3 weeks. Then I slowly noticed in 2 to 3 days I woke up deeper and deeper in the moon crater in the center of the bed. I only weigh 139.4 lbs @ 5' 7"and had to sleep on the very edge of the mattress playing cliffhanger! Im very disappointed! I didnt have any issues at first and then it just happened so fast the mattress just failed. Im sorry Serta but OMG I never thought a company like your would fail with a good reputation with proper set up. Id SAY stay clear of this sleeptrue mattress and buy maybe a lot higher teir of Serta or Simmons. Amazon took care of me very very good with pick up and getting my refund fast to put into another mattress. I pray this new one now is worth it just over $1k. Im gonna give Serta another shot on their high teir Perfect Sleeper Ultimate 14.5" Firm Pillow Top Oasis. ... show more
Reviewed in the United States on February 18, 2026 by Mario Orsini

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