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Amazon Basics

Amazon Basics Medium Firm Memory Foam Mattress, Breathable, 12 Inch, Twin, White/Grey

  • Based on 6,631 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Jul 3
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Size: Twin


Style: 12-inch


Pattern Name: Medium-Firm Feel


Features

  • Certified Safe: Crafted with high-quality CertiPUR-US Certified Foam and an OEKO-TEX Standard 100 certified mattress cover, ensuring this medium firm twin mattress 12 inch is free from harmful chemicals. Additionally, thanks to the wave-shaped support layer in the middle providing airflow, offering you and your loved ones a safer and healthier sleep.
  • Pressure-Relieving: Cooling gel-infused memory foam conforms to our body curves perfectly, distributes the body weight evenly and reduces pressure points on our shoulders, spine and hips. This 12 inch twin mattress meidum firm feeling allows you to relax from head to toe after a long and busy day of work and study.
  • Easy Installation: Our gel memory foam mattress in a box twin size is compressed and rolled into a box for easy transportation through hallways and elevators. Simply follow the instructions for easy setup and witness the magical moment of rebounding. This mattress is compatible with most kinds of twin bed bases and frames, even use it on the floor bed, perfect for bedrooms, guest rooms and dorm rooms.
  • General Note: Please allow 72 hours for this twin size mattress to regain its full shape and for any potential odor to dissipate. Tapping, walking and jumping with your family member on the mattress can speed up the awakening process and enjoy the fun of family games during this time.

Description

Amazon Basics Memory Foam Mattress, Medium Firm, 12 Inch, Twin, White/Grey

Size: Twin


Product Dimensions: 75"L x 39"W x 12"Th


Item Weight: 34.2 Pounds


Item Firmness Description: Medium Firm


Top Style: Memory Foam


Cover Material: Fabric


Number of Layers: 3


Fill Material: Memory Foam


Special Feature: Pressure Relief


Item Firmness Description: Medium Firm


Number of Layers: 3


Additional Features: Pressure Relief


Construction Type: Memory Foam


Is Customizable?: No


Portable: No


Is Foldable: No


Size: Twin


Item Dimensions L x W x Thickness: 75"L x 39"W x 12"Th


Item Weight: 34.2 Pounds


Item Dimensions: 75 x 39 x 12 inches


Item Depth: 12 inches


Cover Material: Fabric


Fill Material: Memory Foam


Product Care Instructions: Spot Clean Only


Mattress Comfort Layer Material: Memory foam


Material Type: Memory Foam


Model Name: HKMF01012T


Product Benefits: Provides comfortable support, reduces pressure points, ensures healthy sleep, is breathable and provides support & comfort


Model Number: F22MD-12T


UPC: 840324419511 843668103009


Manufacturer Part Number: HKMF01012T


Unit Count: 1.0 Count


Included Components: mattress


Age Range Description: Adult


Item Type Name: Bed Mattress Conventional


top-style: Memory Foam


Color: White/Grey


Style Name: 12-inch


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Jul 3

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

    • Great bed
Size: Full Style: 8-inch Pattern Name: Medium-Firm Feel
Great bed! Just right. Not too soft and not too firm.
Reviewed in the United States on December 2, 2025 by Danielle
    • A Maffress for Comfort and a Great Nights Rest
Size: Twin Style: 10-inch Pattern Name: Medium-Firm Feel
Medium fitrm memory foam mattress, delivered vacuum packed with the best, most accurate, concise, easiest to read and understand set of instructions and deserving of an accolade. I followed the instructions with my large, no point scissors in hand. Literature says up to 72 hours for full recovery, my experience was a viable product in six hours. Lierature says mattress can be used during the restoration period, but I gave mine 15 hours before I stretched out on it. Medium firm, beautifully so, promises deep sleep comfort for years. ... show more
Reviewed in the United States on December 1, 2025 by Stuart E. Johnson
    • FIRM, No "Medium" About It
Size: Full Style: 12-inch Pattern Name: Medium-Firm Feel
This is a very well-made mattress, but I took off one star because there is NO "Medium" to the firmness - it is definitely FIRM. As I have no way of shrinking it back into its box, I cannot exchange, but wish I could.
Reviewed in the United States on February 4, 2026 by elo
    • All you need to know about mattresses ☺️
Size: Full Style: 12-inch Pattern Name: Medium-Firm Feel
So you're looking for a mattress! My guess you're overwhelmed with options and info. It's no brainer sleep is important and we want the best for our health/money/comfort. Well I'm here to give my guidance! So when buying a mattress you always want "the best". Sleep is critical for every function of our lives. So it's very natural to humans to believe the more you spend quality reflects as such. Here's the deal with mattress, that is simply not the case! A lot of higher end mattress brands you would be shocked to know how much commission is into the price of the mattress for the floor associate. So now you're stuck looking at affordable mattresses online that you can neither see nor touch. But you're supposed to spend a third of your life on. Well that's no good! Well let's make it simple. Foam mattresses are the best currently on the market. Period. The spine support they offer. They run significantly cooler, this one especially. Durability. Quite. Ease of use (no box springs). Let me make this very clear the foam mattresses win every way over other mattress types. The only con to one is they might smell for a day or 2 when you first get it but it quickly goes away. Okay great so foam it is. Now firmness what's the right one for me. Good question in fact this is the number one priority for a mattress. What happens too often you want to sleep on a cloud or a pillow. Absolutely not. What happens on the super soft mattresses is you're swallowed by it and your back isn't properly supported/decompressing. THIS IS MEGA SUPER IMPORTANT. What happens is when your back is arched like that the vertebrae of your spine touch and here comes the back pain. The only time a super soft mattress is recommended is for a super light child 60 lbs or less. I'm 135 lbs 5'9, scrawny and still too much for even me. Reason being is because the child being so light won't sink into the mattress which will give good spine support and gravity can do it's job. It's all about the spine. This mattress sits a medium firm. Going more towards firm and is absolutely wonderful. My first night I switched from the squishy cloud mattress to this. My back laid flat and gravity allowed it stretch out and decompress. I was literally gasping for air equivalent to a good massage over how much my back was compressed over the years. This mattress is perfect for the average consumer. I will say heavier folks go with a firmer option. This one runs cool. Easy to change sheets on. Priced unbelievable! Can't say enough good. Don't let the mattress stores scam you thousands on a brand, this is the one for you! ... show more
Reviewed in the United States on June 1, 2023 by Nick
    • Popped right open like it says!!!
Size: Twin Style: 10-inch Pattern Name: Medium-Firm Feel
Cut how instructions say. I folowed them and it all works ! Matress is pretty firm but comfy so far!
Reviewed in the United States on January 21, 2026 by Mar
    • Good mattress if you’re young. Terrible if you’re older. Good mattress if you’re young. Terrible if you’re older.
Size: Full Style: 12-inch Pattern Name: Medium-Firm Feel
Review Image by Amazon Customer
This bed is for young adults only. I am an elderly disabled woman who obviously needs a spring mattress. I tried returning it and was told to get it out to my porch (it weighs 50 plus pound). I had to push it all the way there. UPS won’t pick up something not in the box already. You can’t put this back in that small box. I am very upset with Amazon for not being able to do what they said they could get UPS to do. I am really frustrated with this product. It is way too soft. ... show more
Reviewed in the United States on November 6, 2025 Reviewed in the United States on November 6, 2025 by Amazon Customer
    • mattress
Size: Full Style: 8-inch Pattern Name: Medium-Firm Feel
This is very comfortable , molds to your body. A great purchase
Reviewed in the United States on February 18, 2026 by bones
    • Best Mattress I ever bought
Size: Twin Style: 12-inch Pattern Name: Medium-Firm Feel
Best mattress I've ever bought. It arrived on time. It was easy to get out of the box. Read all instructions and it fits perfect on my single bed. Instructions said give it 24 hours to completely expand, but I could use it that night. Sure enough, it finished plumping up, and measures 12". Highly recommend buying the 2 year warranty. If anything changes, they'll replace it. ... show more
Reviewed in the United States on December 7, 2025 by Rence M.

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