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Extended holiday returns
Returnable until Jan 31, 2027 Learn more
Returnable until Jan 31, 2027 Learn more
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2027
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
Only 10 left in stock, order soon!
Arrives
Monday, Nov 16
At a glance
- Condition
- New
- Color
- Black
- Size
- Full
- Model
- SSJ12FL-H-US
- Dimensions
- 75 x 54 x 12 in
- Top Style
- Euro Top
- Cover Material
- Polyester Blend
- In the box
- mattress
Features 5
- Balanced Support for Body Curves. Our 12 inch full size mattress features a medium-firm feel, using a reinforced pocketed coil system and flexible transition foams. It adapts to your body's natural shape, distributing weight evenly across your shoulders and hips. High-density foam along the perimeter provides steady edge support, so you feel secure when sitting or sleeping near the side
- Breathable & Cooling Knitted Fabric Surface. The full mattress features a knitted fabric surface with airflow technology. Designed for sleepers who tend to overheat, this moisture-wicking surface helps release excess body heat throughout the night. It keeps the sleeping environment cool while providing a smooth, skin-friendly feel
- Advanced Motion Isolation for Undisturbed Sleep. Individually wrapped pocket springs absorb movement and reduce noise. Each coil reacts independently, so movement on one side of the bed stays contained helping you and your partner enjoy uninterrupted rest
- Certified Non-Toxic & Family-Safe Materials. This mattress full size is CertiPUR-US certified, meaning all foams are independently tested for safety and performance. It is also fiberglass-free no questionable materials, no hidden fillers. Just a cleaner, more trustworthy sleep environment for you and your family
- Easy Setup & Durable Construction. This 12 inch full size mattress is compressed and packaged for convenient handling. Simply unbox and allow 6 to 8 hours for the mattress to fully expand into its intended shape. Built with high-density foam layers and a pocketed coil system, it is designed to maintain its structure over years of regular use, providing consistent comfort night after night
Description
Is this mattress free of fiberglass? Yes. This mattress is completely fiberglass-free. We use CertiPUR-US certified foam and no fiberglass in any layer. You can sleep with peace of mind knowing there are no irritating particles or hidden materials inside. What firmness level is this mattress? It is a medium-firm mattress. It offers enough cushioning to relieve pressure while maintaining solid support for your back—ideal for back, side, and stomach sleepers. A firm version is also available if you prefer a more solid feel. Will I feel my partner's movements at night? No. Independent pocket springs absorb motion at the source, and the foam layer dampens any remaining vibration. If your partner tosses, turns, or gets out of bed, your side stays undisturbed. Does this mattress sleep hot? No. The breathable knit cover pulls heat away from your body, while airflow channels between the foam layers let heat and moisture escape. It is designed to keep you cool and dry throughout the night. How long does it take to expand after unboxing? The mattress arrives compressed and rolled in a box. After unboxing and unrolling, it expands to full shape within 6–8 hours. Any mild new-mattress odor dissipates within a few hours.
Specs 34
| Brand | Xisynaptix |
|---|---|
| Size | Full |
| Product Dimensions | 75"L x 54"W x 12"Th |
| Item Firmness Description | Medium Firm |
| Top Style | Euro Top |
| Cover Material | Polyester Blend |
| Number of Layers | 8 |
| Fill Material | Gel Memory Foam, Memory Foam, Polyfoam |
| Special Feature | Breathable, Durable, Edge Support, Low Motion Transfer, Pressure Relief |
| Color | Black |
| Additional Features | Breathable, Durable, Edge Support, Low Motion Transfer, Pressure Relief |
| Mattress Coil Type | Pocketed Coil |
| Construction Type | Hybrid |
| Number of Mattress Coils | 800 |
| Mattress Base Compatibility | Box Spring, Platform Bed, Slatted Base |
| Item Dimensions L x W x Thickness | 75"L x 54"W x 12"Th |
| Item Thickness | 12 inches |
| Item Depth | 12 inches |
| Item Dimensions | 75 x 54 x 12 inches |
| Product Care Instructions | Allow Mattress To Air Dry Completely Before Use, Do Not Flip Mattress, Rotate Mattress Seasonally, Spot Clean Only, Use A Mattress Protector To Prevent Stains |
| Mattress Comfort Layer Material | Gel Memory Foam |
| Material Type | Gel Foam, Memory Foam, Polycotton, Polyester |
| Item Highlight | Cool Gel Memory Foam, Pocket Springs, Motion Isolation, Pressure Relief, Fiberglass Free, CertiPUR-US Certified, Medium Firm |
| Brand Name | Xisynaptix |
| Model Name | SSJ12FL-H-US |
| Product Benefits | Back Pain Relief, Posture Support, Pressure Relief, Reduces Toss & Turn, Stress Relief |
| Model Number | SSJ12FL-H-US |
| UPC | 780103708033 |
| Number of Items | 1 |
| Mattress Type | Standard Mattress |
| Number of Packs | 1 |
| Manufacturer | PT. AIMUS BEDDING INDONESIA |
| Unit Count | 1 Count |
| Manufacturer Part Number | SSJ |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Nov 16
Yes, absolutely! This item's return window has been extended for the holiday season: Returnable until Jan 31, 2027.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Slept well
Color: Grey
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She said it slept better than the other one
Reviewed in the United States on August 30, 2026 by tony mulkey
85/100
Color: Black
Size: Full
Es comoda, si eres una persona que no le gusta ni muy suave ni muy duras esta es una excelente opción, se hunde un poco si te sientas a los extremos de la cama, si quieres algo mejor haz el ahorro y compra uno más caro, me conformo con este
Reviewed in the United States on September 5, 2026 by Catalina Rodriguez
My First Hybrid Mattress and So Far, I’m Very Impressed
Color: Black
Size: Full
I really like this budget-friendly mattress! I previously had a 12-inch all-memory-foam mattress that was comfortable for a while, but eventually it just wasn't working for me anymore. This is my first hybrid mattress, and so far, I am really enjoying the difference. I've only had it for a few weeks, but one thing I have noticed is that I am waking up without the stiff, sore back I had started experiencing with my old mattress. That alone makes me pretty happy. I'm hoping that comfort continues as I get more time with it. Unpacking was easy, and it was actually kind of fun watching the mattress expand over the first few hours. I gave it the recommended amount of time to fully expand before using it. There was no strong chemical odor, which I appreciated, and I also like that it is CertiPUR-US certified. The mattress has a medium-firm feel, which is exactly what I was looking for. The top is soft and comfortable, and I use a fluffy, silky-feeling mattress pad that adds an extra layer of softness and makes the whole thing feel a little more luxurious. The pocket springs are new for me, and I think they are making a noticeable difference in the support. I feel like I'm getting more support for my back than I did with my old all-foam mattress. The one area that could use some improvement is the edge support. When I sit on the edge of the bed, it feels a little squishy. Once I'm actually lying down, though, it feels great. For the price, I am really happy with this mattress. I obviously can't speak to how it will hold up several years from now, but after a few weeks, I'm sleeping comfortably and waking up feeling better. I’m glad I took the chance on a hybrid mattress, and at this point, I don't think I'm going back to solid memory foam!
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Reviewed in the United States on August 18, 2026 by Julie C.
Good sleep experience, doubtful longevity
Color: Black
Size: Full
Medium firm is my mattress of choice, and I'd say Xisynaptix does a pretty good job at hitting that target. Without knowing the rating given I'd describe this as a medium firm mattress. The top is comfortable and the bed is not jiggly, so I think there is something to the attempt to isolate individual movement. Overall, this is one of the more comfortable mattresses I've slept on. The mattress was easy to unpackage with the included safety blade knife. It took only a few hours to reach full expansion, much less time than the 24+ the instruction says to expect. There was no discernable odor when the plastic wrap came off, that's worth a star by itself in my book. Now for the not-so-great. Lying on the bed the mattress is medium firm as was earlier stated. However, sitting on the edge it feels rather soft. Like the springs are individually rather weak. I don't know if this is a problem but if reduces my confidence a bit. The other factor that causes me to reduce the rating is the quality of the top stitching. A couple of the contours are uneven; the tufts are a different size from end to end. It's not enough to pick up on while lying on the mattress but it makes me discount the likelihood of this lasting well. I ordered this mattress for a guest room and in that capacity I think it will provide good value, I don't recommend for your every night sleep center.
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Reviewed in the United States on August 10, 2026 by HAROLD S.
Pretty descent budget mattress
Color: Black
Size: Full
Now do I think this is the most comfortable or firm mattress? No absolutely not. Do I think its a good option for those that are on a budget and need something descent? Yes for sure. The top layer of the mattress was surprisingly comfortable feeling and was soft to the touch. I do think this is pretty much a one person mattress OR a mattress for two people who are under 150 lbs. When I got to the edge of the mattress it pretty much just collapsed so It isn't reliable to hold weight in that part of the mattress. I didn't sink into the middle of the mattress when I laid on it and I am about 200 pounds. I am curious to see how long this will keep its firmness and IF it would start to sink in the middle but It was pretty comfy for the price you pay. This came compressed in a box and did take a day or so to fully expand and I fortunately didn't notice any weird smells at all. I do like that this is much firmer than some mattresses I've tried and is pretty true to the medium firm claim.
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Reviewed in the United States on August 11, 2026 by Salem
Great nights sleep on this mattress!
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This mattress is thick, soft, and sturdy, definitely built with quality in mind. It was very easy to set up too, it expanded to its full size almost instantly once we took it out of the compressed shape it came in from the box. It's really comfortable to sleep on, holds its shape well, and doesn't feel like it's going to break down anytime soon. Great option if you want something plush but still supportive, and we've had a great night's sleep on it every time. Overall very happy with this purchase and would recommend it.
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Reviewed in the United States on August 31, 2026 by Mystic Mama
Great mattress for youth and budget!
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This mattress is great for starter mattress! I know most people are used to high expectations and look for the biggest bang for our buck. But if you need a really good mattress that is comfortable and fills your needs, you won't be disappointed. The reason for 4 stars is the minimal top padding that is great for lighter weight and smaller people. The support is actually great for those who prefer a little more firmness. The sides do collapse if you sit on the edge and I am 130 lbs. But once you lie down on the mattress it is firm and comfortable. I am most happy with the ease of shipping to door, rapid set up, and the cost. If you are trying to get set up in a home and money is tight, this is a great quality option that will last a while. This also works perfectly for guest bed, daybed, and tiny homes. This mattress works well on platform beds and the fold out frames if you have narrow halls or stairs that prevent you from being able to move box springs through them.
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Reviewed in the United States on August 14, 2026 by Alita
Excellent mattress for the price
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What a great mattress! It is a true full size mattress. And the medium firmness is great, very supportive without feeling like a stone slab. The mattress is also nice and thick, which lends a lot to its over all comfort. One thing I was VERY happy about it there was no odor when we opened it. I have had other foam mattresses that took weeks to off gas. I was pleased that we were able to start using this one after letting it regain its size after opening. For the price, I cannot recommend this mattress enough!
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Reviewed in the United States on August 19, 2026 by Kyle Stevenson