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Amazon Basics

Amazon Basics Memory Foam Mattress, King Size Mattress, Hybrid, 12 Inch, Medium Feel, Motion Isolation Springs, White/Gray

Based on 1,196 reviews
Condition: New
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$407.49

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At a glance

Condition
New
Style
12-in
Size
King
Model
AB12HY66
Dimensions
80"L x 76"W x 12"Th
Weight
107 lb
Color
White / Gray

Features 5

  • ENHANCED COMFORT: The hybrid mattress is designed to provide sleeping comfort that is ideal for any bedroom or guest room.
  • MEDIUM-FIRM SUPPORT: This king mattress is made with medium firm memory foam that conforms to body contours and alleviates pressure points for a more comfortable sleep.
  • CONVENIENT SHIPPING: The king memory foam mattress is vacuum-packed for convenient, compact delivery; simply remove the mattress from its box and allow up to 48 hours for full expansion.
  • HYBRID DESIGN: The hybrid mattress combines supportive pocketed steel coils for edge-to-edge support with a cooling gel-infused memory foam layer and a quilted top for added comfort.

Description

This memory foam mattress king size provides a medium-firm feel that supports the body's contours while reducing pressure points. The 12-inch mattress, king size bed features a hybrid design that combines pocketed steel coils for edge-to-edge support and effective airflow, a cooling gel-infused memory foam layer, and a quilted top. This king mattress memory foam arrives vacuum-packed for convenient and compact shipping; simply remove it from the box and allow up to 48 hours to fully expand. The mattress king size 12 inch includes CertiPUR-US certified materials, with high standards for content and emissions. Ideal for any bedroom or guest room, this king-size mattress in a box offers a comfortable and supportive sleeping surface. Available as a king size memory foam mattress that is both firm and suitable for various sleep positions, this king size bed mattress is an excellent choice. From the Manufacturer Amazon Basics

Specs 11

Size King
Product Dimensions 80"L x 76"W x 12"Th
Top Style Tight Top
Fill Material Memory Foam
Color White / Gray
Coil Type Pocketed Coil
Product Care Instructions Hand Wash Only
Comfort Layer Material Memory foam

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Top Amazon Reviews

So far so good with this mattress
Style: 12-inch Size: Queen
First update (July 2020) I'm now a month in and I'm still very happy with this mattress. It is very comfortable, my quality of sleep has improved and I have way less back and shoulder pain. Only thing I've been looking into is a cooling gel infused mattress topper because it's now the dead of summer and uncomfortably warm even at night. I bought this and it arrived at my doorstep within 5 days. Very convenient. Packaged neatly, compressed and delivered by UPS. Total came out to $358.37 which is cheap for a bed, I was questioning the quality but decided to go for it because Amazon's return policies are decent. I ordered this mattress, along with the ZINUS Arnav Modern Studio 10 Inch Platform 2000 Metal Bed Frame (which I also reviewed so it is now available on my profile), after the old mattress I’ve had since high school developed a crater so deep it was visible even when no one was on the bed. Even the box spring was flattened in the center so I decided I needed a whole new setup. I personally spent hours reviewing various mattresses, weighing pros and cons of memory foam vs. spring vs hybrids. I decided on this hybrid mattress from AmazonBasics because I trust the brand a bit more than some of the unfamiliar online-only ones, and I chose hybrid because before this I had a pillow top spring mattress so I wasn’t sure I’d like a 100% foam bed. This mattress is firm without being too hard, it’s comfortable and the motion isolation claims are true, especially for a couple like myself and my spouse who previously had a spring mattress and felt every movement. It is nice being able to turn over without waking each other. The price is very good for the quality and honestly I’d recommend purchasing this bed, I don’t feel like this mattress will have any issues with indenting. However I will be back to update my review especially if anything goes wrong. Also I’d recommend purchasing a mattress protector, I have one on the way. The foam seems like it’d be absorbent and I’d rather not damage it with accidental spills. I think I made a good choice. Overall the process was easy, unbox and unwrap the mattress on the frame or wherever you choose to keep it because it’s easier that way. Personally I think my mattress was full after about 2 hours or so, we slept on it that night with no problems. I ordered the 12 inch / queen version so it’s definitely higher up than I’m used to, but I enjoy how much easier it is to get in and out of bed with the height. I’m comfortable, I slept well, no weird aches or pains, but with the shape that my last mattress was in, anything is an improvement. I fully believe I made a good choice with this bed, as comfortable and well made as it appears. I am a guy in my early 20s though so there was no struggle for me to pick up the box and since it was delivered to my doorstep I just had to drag it down the hallway to my room, where I eagerly tore open packaging like a child on Christmas day, only for this thing to spring open and the impact was like an air-bag. Don’t open it the way I did - watch a video on opening them and for best results, lay it in your bed frame before opening it. TL;DR Freshly ordered and set up, so far so good. No noxious odors, no issues with quality or damage, very comfortable. Will be back to update as time progresses. First night of sleep went really well. If my review helped you, please let me know by hitting the helpful button. Thank you! ... show more
Reviewed in the United States on June 26, 2020 by C&J
Original and 2+ year update
Style: 12-inch Size: Queen
Nov2022 Paid $399.90 We are in our mid 40s and we were starting to experience a good deal of neck and back pain (leg too). After realizing our old Serta had a bit of a sink hole - we decided to get a new mattress before chalking up the aches and pains to getting older. After a good bit of research and working within our budget - this Amazon mattress looked like it would fit the bill. We’ve never had a memory foam but have the slept on them before. We live in a climate that runs 100-115 degrees in the summer. Memory foam is usually too warm for us (even in the winter they make me hot). So we opted to try out the hybrid. We liked the idea of memory foam for our joints but wanted some support from some springs. Delivery Day: It puffed up pretty quickly after removing the plastic and the out gassing wasn’t particularly bothersome to either one of us. It smelled new sure but it wasn’t that bad. Trying it out: Our first couple nights were actually kind of weird. It was firmer than I thought it would be and we were pretty used to our 20 year old mattress so it took a second to get used to not laying in a hole? 😂 But the first night we both woke up with fewer aches. And by day 3, pretty much no aches and we were reveling in how soft something so firm could feel when sleeping on it. Update: May 2022 We got this mattress in Nov 2021. It is now almost May 2022 and unlike some reviewer complaints - we’ve not had any issue with the mattress denting or caving in. It still looks pretty much like it did when we got it. I weigh about 140 and my husband weighs about 180 - neither of our sides have dents. We have rotated it once since we’ve had it (just swapped what was the head end). It does run warm. Not as warm as full memory foam mattress. But it still runs warm. In the winter it’s actually fantastic. We haven’t tried it in the summer but we’ve already begun to see some warmer temps and I’ve found less blankets and lighter weight clothes was all we needed to adjust to manage the warmer mattress. I’ll try to update my review after a year has gone by. I hope Amazon keeps making these. They are comfortable, good quality and more affordable than similar options. Update: April 2024 Everything I said before stands. Still comfortable. Shows no signs of dipping. We have both gained some weight since the previous update too. We even watch evening tv 5 nights a week chillaxing in it. Once a year we flip head/foot to rotate the mattress. We’ve kept it in a heavy duty, good quality mattress cover from day 1. (Highly recommend doing that) Looks pretty much brand new. ... show more
Reviewed in the United States on April 28, 2022 by Mamy B
A Great Value
Style: 10-Inch Size: Twin
I had first gotten my 15 year old son a memory foam mattress that was supposed to be medium-firm. It was way too soft and he said he wanted firm. My own king size mattress is hybrid that I found to be superior than just coils or just foam, so I decided to go looking and was happy to find that Amazon put their brand name on this mattress. It's perfect. Perfectly firm and soft at the same time. My son is a big kid. Almost 6ft and 230lbs and he loves it and says its very comfortable. I think it's the most comfortable mattress in the house now. Great value and a great mattress. ... show more
Reviewed in the United States on June 8, 2025 by SuperDad
Recommend
Style: 10-Inch Size: Twin
Comfortable and was easy to unpack
Reviewed in the United States on May 21, 2025 by Aleshia Gould
Bed for visitors
Style: 12-inch Size: King
We bought this for when family visits and needs a bed to sleep in. We have had nothing but positive comments on how comfortable is was, even for larger people. One person said that they were going to get this exact bed to replace the one at their home, and they loved the price.
Reviewed in the United States on August 11, 2025 by Keith Merrill
Great mattresses
Style: 10-Inch Size: Twin
My girls love these mattresses! They were complaining about their old ones and I was iffy about ordering online without testing it in person, but the 90 day guarantee put me at ease, so I pulled the trigger and basically did 2 week check ins and they love how soft it was and it’s easy for them to fall asleep for naps and nighttime. It also fit perfectly on their bunk bed frame. ... show more
Reviewed in the United States on June 17, 2025 by Brendan
Great bed, Great price!
Style: 12-inch Size: King
Very comfy, like a cloud
Reviewed in the United States on July 21, 2025 by Flint Company
Excellent mattress!
Style: 10-Inch Size: Full
This mattress WAY exceeded my expectations! It’s super comfy, came well packaged, and has been a great mattress for whenever I have company. The price on it is fantastic as well!
Reviewed in the United States on July 1, 2025 by Daniel Levett
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