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Serta

Serta Five Star Mattress Tranquility 12-Inch Firm– Queen– Zoned Support, Pressure Relief, Cooling– Bed-in-a-Box – Ideal for Back & Stomach Sleepers – 100 Night Trial, 10-Year Limited Warranty

  • Based on 58 reviews
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Availability: 12 left in stock
Fulfilled by Amazon
Arrives Wednesday, Sep 24
Order within 1 hour and 19 minutes
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Style: Level 3 Firm 12"


Size: Queen


Features

  • FIRM MATTRESS FOR BACK & STOMACH SLEEPERS: Designed for a supportive, firm feel that helps promote proper spinal alignment and reduces sinkage for a refreshing night's sleep.
  • 3-ZONE TARGETED SUPPORT: Zoned foam targets lumbar and lower back areas for enhanced support and pressure relief.
  • PRESSURE RELIEF FOAM COMFORT: Layers of PillowSoft Aire Foam and QuiltLoft Memory Foam cushion pressure points such as shoulders, hips, and knees. COOLING & BREATHABLE MATTRESS: Breathable fabrics and foams help keep you cool and fresh all night.
  • DURABLE SUPPORT FOR UNDISTURBED SLEEP: Durable coils reduce partner disturbance-provide lasting support across the mattress. BUILT TO LAST CERTIPUR-US CERTIFIED: Sleep soundly - CertiPur-US certified and backed by a 10-year limited warranty.
  • EASY SETUP MATTRESS-IN-A-BOX MADE IN USA: Delivered in a box and made in the USA with global components. Setup takes minutesjust Unbox, Unroll, Unwind.

Description

Sleep better with the Five Star Mattress Tranquility 12-Inch Firm Mattress, designed for cooling comfort, targeted support, and long-lasting durability. This firm mattress is ideal for back and stomach sleepers, providing a stable sleep surface that promotes spinal alignment and helps reduce pressure on shoulders, hips, and knees. The 3-Zone Support System focuses on lumbar support for healthy posture, while advanced memory foam layers offer cushioned comfort and pressure relief. Stay cool with a breathable, airflow-enhancing mattress cover, and enjoy peace of mind knowing all foams are CertiPUR-US certified. Perfect for primary bedrooms, guest rooms, or kids’ rooms, this mattress-in-a-box delivers premium quality at an affordable price, expanding quickly for immediate comfort. 100 Night Trial, 10-Year Limited Warranty

Brand: Serta


Size: Queen


Product Dimensions: 79.5"L x 60"W x 12"Th


Top Style: Tight Top


Number of Layers: 7


Fill Material: Memory Foam


Special Feature: Breathable, Durable, Low Motion Transfer, Pressure Relief, Temperature Regulating


Color: White


Model Name: Serta Five Star Mattress Tranquility 12” Firm Bed in a Box


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


Product Dimensions: 79.5 x 60 x 12 inches


Item Weight: 55.6 pounds


Manufacturer: Serta Simmons Bedding, LLC.


Item model number: 50


Refill: Memory Foam


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.


Assembly required: No


Batteries required: No


Included Components: Mattress


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 24

Yes, absolutely! You may return this product for a full refund within 100 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 but thickness isn’t correct.
Style: Level 3 Plush 10" Size: Queen
Very comfortable especially considering it comes in a box. One of the best I have owned. However it is definitely not 10 inches, I’m not even sure it is fully 8 inches. Don’t like paying for a 10 inch when is isn’t but overall very satisfied.
Reviewed in the United States on August 26, 2025 by HLD
    • Amazing!
Style: Level 2 Medium 8" Size: Twin
Very impressed with this mattress! Here i spent near a thousand for my mattress and ny little one's twin mattress that was a fraction of the price ... Is wayyyy more comfortable 🫠
Reviewed in the United States on August 10, 2025 by joann t.
    • Nice, but possible size issues.
Style: Level 2 Medium 8" Size: Twin
Review Image by Lynn Lopez Lynn Lopez
Review Image by Lynn Lopez Lynn Lopez
First impressions, we opened this mattress about an hour ago. It seems well made. We typically like and seek to buy Serta. It did start expanding immediately after opening. So far, after about an hour, it has expanded to about 5.5" (we purchased an 8"). I believe it will fluff a bit more, but not sure if it'll make the full 8". Here's the real downer though; a twin mattress is supposed to be around 75" in length. This mattress measures at about 71.5" leaving quite a lot of gap at the top and bottom. I do not believe that the length is going to fill out. This is very disappointing in regard to the overall fit. I checked the twin xl and the price is around $100 more (supposed to be 80"). The conundrum is, would a Serta twin xl be less than the stated length and therefore fit, or will it be true to size, and be too long? ... show more
Reviewed in the United States on August 5, 2025 by Lynn Lopez Lynn Lopez
    • Comfy and firm
Style: Level 3 Medium 10" Size: Queen
Exactly what it says. Super comfy but also firm
Reviewed in the United States on August 13, 2025 by dakota alvarado
    • Not worth it
Style: Level 3 Firm 12" Size: California King
We set the mattress up according to instructions. It was smaller than advertised, about 2 inches narrower. It did not expand to 12 inches, it is closer to 8 inches. Even after weeks, it has a huge hump in the middle. Returning it for something different.
Reviewed in the United States on August 16, 2025 by Beau L
    • Good quality, good sleep
Style: Level 3 Medium 10" Size: Queen
It was still a little more firm than I expected but a foam topper solved that and it's very comfortable
Reviewed in the United States on August 5, 2025 by Amazon Customer
    • Nice mattress
Style: Level 2 Medium 8" Size: Twin
Very nice very comfortable, surprised at its quality especially for the money. It’s definitely a future buy for any other single beds that I need to change out mattresses for.
Reviewed in the United States on July 26, 2025 by Amanda Pedersen
    • Wrong Size of Mattress
Style: Level 2 Medium 8" Size: Twin XL
The mattress is quite comfortable, was delivered quickly, and easy to assemble. However, it is not the size of a Twin XL. I assume it is only a standard twin, but there are no tags with the size attached. I do not believe it is the mattress that I ordered.
Reviewed in the United States on August 30, 2025 by Luke Steiner

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