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Serta Five Star Mattress Tranquility 10-Inch Medium – Twin XL– Zoned Lumbar Support, Pressure Relief, Cooling Foam – Bed-in-a-Box– 100 Night Trial, 10-Year Limited Warranty

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$291.24 Why this price?
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon

Arrives Saturday, Mar 28
Order within 15 hours and 59 minutes
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Style: Level 3 Medium 10"


Size: Twin XL


Features

  • MEDIUM-FIRM COMFORT: A balanced feel that supports proper alignmentideal for combination sleepers and those who prefer not-too-soft, not-too-firm.
  • ZONED LUMBAR SUPPORT FOAM: 3-Zone Support Foam targets the lower back and hips for pressure relief and alignment.
  • CUSHIONED PRESSURE RELIEF: Serta PillowSoft Aire and PillowSoft Foams provide contouring comfort around shoulders, hips, and knees. BREATHABLE COOLING DESIGN: Airflow-enhancing cover fabric and breathable foams promote a cooler sleep environment.
  • 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

Experience balanced comfort with the Serta Five Star Mattress Tranquility 10” Medium Mattress, designed with a medium-firm feel that adapts to all sleep styles. A gel-infused lumbar band targets the lower back, while pressure- relieving foams cushion high-impact areas for all-night ease. Stay cool with a breathable mattress cover and enjoy peace of mind knowing all foams are CertiPUR-US certified. Perfect for any bedroom, this mattress-in-a-box is easy to install and built for long-lasting comfort. 100 Night Trial, 10-Year Limited Warranty

Brand: Serta


Size: Twin XL


Product Dimensions: 79.5"L x 39"W x 10"Th


Item Firmness Description: Medium


Top Style: Tight Top


Cover Material: Polyester Blend


Number of Layers: 5


Fill Material: Memory Foam


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


Color: White


Product Dimensions: 79.5 x 39 x 10 inches


Item Weight: 57.4 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: Saturday, Mar 28

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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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Worth the purchase
Style: Level 3 Medium 10" Size: Twin
Great sturdy but still soft mattress. We opened it and let it settle for 2 days before putting it on the bed. My kid says it’s very comfortable and has slept like a champ.
Reviewed in the United States on November 14, 2025 by Andrea McCue

  • Excellent price
Style: Level 3 Plush 10" Size: Twin
Excellent quality. I sleep like a baby on this comfortable mattress. It’s like sleeping on a cloud.
Reviewed in the United States on December 1, 2025 by Kimberly Haugan

  • Soft but strong
Style: Level 3 Plush 10" Size: King
Amazing so comfortable and easy to set up
Reviewed in the United States on January 1, 2026 by Lauren Bonwit

  • Size is not big enough
Style: Level 3 Plush 10" Size: Full
My bed is a full size. I measured everything before I bought. This mattress is about 2 inches smaller than it should be all the way around. It is a great mattress but I have to buy wedges to get it to fit.
Reviewed in the United States on November 30, 2025 by Lisel Sipes

  • Not as described
Style: Level 2 Medium 8" Size: Queen
Somewhat comfortable to sleep on. It definitely is not an 8in mattress. I measured and it’s close to 6in.
Reviewed in the United States on November 3, 2025 by Tammie Brown

  • Finally a good medium firm mattress!
Style: Level 3 Firm 12" Size: Queen
This has been the most comfortable mattress! I have been so much more comfortable and able to get better sleep. It’s firm, but not too much.
Reviewed in the United States on November 30, 2025 by MSG

  • Such a comfortable mattress!! Very soft!!!!
Style: Level 3 Plush 10" Size: Twin
Such a comfortable mattress!! Very soft!!!! Love it! Reminds me of a Serta pillow top mattress I bought 20 years ago for 800.00. Buy it!!!
Reviewed in the United States on December 10, 2025 by Chaz Goodin

  • Amazing mattress!
Style: Level 3 Plush 10" Size: Queen
This mattress is amazing. You can trust serta. Previous to this one I had a serta perfect sleeper mattress which was used for over 10 years. It became too soft but it lasted a long time. Now this one gives me the support my back needs. I was worried the plush mattress would be too soft and not offer support but it is perfect. If you lay flat on it it gives great support and is not hard. I sleep great now. If you want a mattress that isn't too firm but offers support, this is a great choice. It does have a light smell, just like any new mattress would, but once you put sheets on it you can't smell it. And I'm sure the smell eventually goes away. ... show more
Reviewed in the United States on September 10, 2025 by Amazon Customer

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