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Availability:
In Stock.
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Saturday, Oct 31
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Size: King
Style: 10"
Pattern Name: Firm
Features
- Memory Foam
- COOLING GEL INFUSION: This cooling gel memory foam mattress sleeps cooler; gel infused into the comfort layer draws heat away from your body, while bamboo charcoal absorbs moisture and helps regulate temperature throughout the night
- FIRM FEEL: A firm memory foam mattress feel with 2.5 inches of gel foam for surface comfort and a dense support base; structured support from edge to edge for stomach and back sleepers. Compatible with adjustable bases
- DESIGNED FOR COMFORT: Three layers of memory foam mattress construction work together all night: 2.5 inches of gel foam, a 1.5-inch transition layer, and a 6-inch high-density base; the right balance of comfort and spinal alignment
- SAFELY MADE IN THE USA: Mattress made in the U.S with global and U.S. parts, including CertiPUR-US certified foam independently tested for content, emissions, and durability; backed by a 10-year limited warranty
- BED IN A BOX: This memory foam mattress in a box ships compressed for easy delivery; works on adjustable bases, platform frames, and slatted frames right out of the box; no box spring needed
Description
A mattress upgrade shouldn't require a second job. The Lucid® 10-Inch Gel Memory Foam Mattress is available in Plush, Medium, or Firm to match exactly how you like to sleep. The Plush version gives you a deep, sink-in feel that wraps around your body and relieves pressure points, ideal for side sleepers and anyone who loves a soft plush mattress. The Medium feel memory foam mattress hits the sweet spot between contouring comfort and support, making it a go-to for back sleepers, combination sleepers, and guest rooms that need to please everyone. The Firm memory foam mattress keeps you riding on top with structured, edge-to-edge support, the right call for stomach sleepers and those who've always found plush beds too soft. This mattress is safely made in the USA with global and U.S. parts, including CertiPUR-US certified foam independently tested for content, emissions, and durability. It's designed with you and your family in mind, this mattress is fiberglass free and has safely passed all flammability testing in U.S. laboratories. This memory foam mattress is backed by a 10-year limited warranty. A convenient mattress in a box ships easily and works with any flat surface, no box spring needed. Available in Twin, Twin XL, Full, Queen, King, and California King.
Specs & Other Info
| Specification | Details |
|---|---|
| Size | King |
| Key Features | Hypoallergenic, Pressure Alleviation, Breathable Fabric, Minimal Motion Disturbance |
| Material | Gel-Infused Memory Foam and Standard Memory Foam |
| Brand | LUCID |
| Dimensions | 79"L x 75"W x 10"H |
| Color | White |
| Model | Lucid 10 Inch Medium-Plush Memory Foam Mattress |
| Benefits | Designed with cooling, hypoallergenic, and moisture-wicking materials for a superior sleep experience that offers pressure point relief and high breathability |
| Care Instructions | Spot clean only; vacuum and use baking soda for freshness. Do not wash, bleach, tumble dry, iron, or dry clean. |
| Cover | Polyester Blend |
| Weight | 58.5 lbs |
| Manufacturer | LUCID |
| Item Number | LU10KKFR30GF |
| Thickness | 10 Inches |
| Material Type | Memory Foam |
| Compliance | CertiPUR-US Certified |
| Assembly | Not Required |
| Pieces Included | 1 |
| Warranty | 10 Year Warranty |
| Batteries Needed | No |
| Included | Compressed and Rolled Mattress |
Frequently asked questions
The LUCID 10 Inch Memory Foam Mattress is uniquely designed with bamboo charcoal and gel infusion. Bamboo charcoal aids in reducing odors and pulling moisture away, making it ideal for people with allergies or sensitivities. Meanwhile, the gel infusion helps regulate temperature, keeping you cool throughout the night.
This mattress offers firm support that contours to your body, providing pressure relief by evenly distributing your weight. This helps to reduce pressure points typically found around the hips, shoulders, and knees, promoting a more comfortable and restful sleep.
While the firm feel of the mattress is particularly beneficial for back and stomach sleepers, providing them with the necessary support and alignment, side sleepers who prefer a firmer surface may also find it comfortable. It's important for each sleeper to consider their personal comfort preferences and needs.
Thanks to its gel infusion and breathable design, the LUCID 10 Inch Mattress helps regulate temperature by facilitating air flow and dissipating heat. This keeps the sleeping surface cool and comfortable throughout the night.
Similar Products
Top Amazon Reviews
🚀 Abunda's Overview
This is our summary and key points to consider based on customer reviews.
The Lucid Mattress has garnered positive feedback for its comfort, adaptability to different sleeping styles, and value for money. Buyers appreciate the mattress's ability to cater to side, back, and stomach sleepers, highlighting its medium firmness and the convenience of delivery. Though it's praised for its initial quality and affordability, some users report issues with durability, noting sagging over time.
Pros
- 😴 Offers comfort for a variety of sleeping positions
- 💰 Great value for the price
- 🚚 Convenient delivery and easy setup
- 🕒 Significant improvement in sleep quality reported by users
- 👍 Available in different sizes and firmness options to cater to personal preferences
Cons
- 📉 Some reports of sagging and loss of comfort over time
- 🔍 Description inaccuracies mentioned, including thickness
- 🛏️ Mattress protector may affect comfort negatively
Should I Buy It?
If you're in need of an affordable and comfortable mattress option and don't mind potentially replacing it sooner than some higher-end models, the Lucid Mattress might be a good buy. It's particularly recommended for guest rooms or for those who are experimenting with memory foam for the first time. However, if long-term durability is your top priority, you may want to consider other options.
Size: Twin
Style: 5"
Pattern Name: Firm
I bought this Lucid 5” memory foam mattress for a simple setup and honestly didn’t expect much, but it turned out better than expected. It’s definitely on the firmer side, which I personally like, especially for back support. Even though it’s only 5 inches thick, it feels supportive and doesn’t sink too much. It works great for a guest room / kids room / lighter use, and it fits perfectly on a platform bed frame. Setup was super easy and just unbox and let it expand. I also noticed it doesn’t trap too much heat compared to other memory foam mattresses, which is a plus. No strong chemical smell either after airing it out for a bit. Overall, great value if you’re not looking for something super thick or ultra-plush. Solid, simple, and gets the job done. If you want it a little more “Amazon top reviewer style” (shorter, more punchy, or more critical), I can tweak it 👍
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Reviewed in the United States on March 20, 2026 by Shopping Ninja
Size: Full
Style: 10"
Pattern Name: Firm
very very comfy mattress ... solid firm.
Reviewed in the United States on October 2, 2026 by busaking
Size: King
Style: 10"
Pattern Name: Firm
Bought the 10” Lucid in the firm version at the very end of December 2020 (post Christmas sale). Wanted the overall height of the bed to be lower than our previous 14” Simmons memory foam on foam platform supporting box spring. That was furniture store bought and which was about 10 years old. It had depressed where we each usually sleep. Kept the platform which really didn’t appear to have any sag and added a wood slat support on top of it to preempt it from getting any from the thinner mattress. Let the new mattress breathe after unboxing for four days. Put it in place and attempted sleep for a few nights. Then we talked and found out we were sharing the same pain. Bone joints; shoulders, hips, knees, and elbows, ached for both my spouse and me; hubby 6’3” 188 lbs & wife 5’3” 118. Tried sleeping on back, sides and front. By the 7th of January we bought a 4” combination mattress pad that’s 2” more memory foam and 2” polyester padding. So much for the thinner profile and actually seeing much of our headboard. This made the bed comfortable and our sleeping nightly remained sound until November 2023. By then the sleep spots were getting depressions in the top of the bed which were no longer removed by a wash of the fiber pad and fluffing. Removed the mattress pad combo and replaced with to another pad set that claims 4” but is really 2.5” memory foam and 1” polyester pad and this has rejuvenated full night’s sleep and a flat bed top again.No depressions were noticed in the mattress when making the topper switch. It was so hard I don’t know that we could depress it. Overall thoughts - Really wished we could have done a lay test. Pleased the Lucid mattress has held shape. Sad it was about 40% of the price to make it sleep worthy. Okay with the fact that add got us 3 years of use and it was about that same amount to renew the feeling rather than buying a new mattress. If it goes another 2-3 years then the value decision to get a bed in a box has been comparatively inexpensive to the store experience and we’ll do it again.
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Reviewed in the United States on January 10, 2024 by Kris-n-Tom
Size: Twin XL
Style: 5"
Pattern Name: Firm
Bought for my semi truck sleeper bunk. I love it more than my $2400 Sealy hybrid mattress at home.
Reviewed in the United States on September 24, 2026 by Eric
Size: Queen
Style: 10"
Pattern Name: Firm
Very comfortable, prefect level of firmness. I've owned this one for about two months now and it's just as good as the day I set it up. It's replacing another Lucid I had that wasn't as firm, but still lasted 4 years.
Reviewed in the United States on August 23, 2026 by Bill Krom
Size: Twin XL
Style: 5"
Pattern Name: Firm
If you like firm then the 5” is perfect. I’ve had the mattress for 5 years now and it’s just as firm as when I first got it. Great for my back.
Reviewed in the United States on September 5, 2026 by Elbow
Size: Full
Style: 5"
Pattern Name: Firm
Got this during Prime Day to replace a couple of foam toppers I have been using on a hand-me-down traditional full mattress and box springs set that is still too hard for my taste despite being broken down. The two toppers were about 5 inches total of just "memory foam" and weren't really getting the job done. I am 62, overweight, and have arthritis in many joints, including my hips. I sleep mainly on my left side but at times, my left hip would hurt and I would end up on my back during the night. This caused my back to hurt and my legs to go numb. Not to mention apnea episodes with multiple wakings during the night. To be honest, I really didn't pay much attention to the inches and just saw the good price - got mine for a lot less than what it's going for now. When I got it and saw that it was only 5 inches, I worried. Especially when I read on the company website that it was designed to transition kids from the crib to a full size bed. I was afraid it wouldn't be firm enough to give the support I needed. Happy to say that assessment was very, very wrong. I got it out of the box at around 11:00 am and it was fully decompressed by the time I was ready for bed 12 hours later. There was no strong smell that I could detect and I am very sensitive to smells. It's firm enough to keep my hip from hitting bottom yet cushy enough to keep me pain free. I woke up on my side, exactly as I had gone to sleep. Basically, I slept like a rock and woke up feeling a lot better than I usually do. I would definitely recommend this mattress if you are looking for a replacement. However, considering how the full mattress is suddenly going for more than twice what I paid for mine during Prime Day, you might want to check around for a better price if you're looking for a full. By the way, this mattress works just fine atop a traditional mattress and box springs. I even have another foam topper between the older mattress and this new one but only because it would have been a royal pain to have gotten rid of the topper first.
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Reviewed in the United States on July 24, 2022 by P. Thompson
Size: Twin
Style: 5"
Pattern Name: Firm
Bad quality and customer service. Don't buy it for your health. I bought this mattress one year ago. recently I feel my back are really hurt, after carefully check, I found it was caused by the mattress. The middle part of the mattress are soft than other part obviously, so that my back was not support properly when I sleep. I try to contact costumer service, it is really hard to reach them. Finally I got response from them, after over 1 month explanation, they told me that the warranty only covers lasting indentations or sags deeper than an inch and a half. How that possible to a 5 inch mattress has a one and half deep hole in the middle? so ridiculous!! The first photo shows that the mattress is placed on a hard, flat wooden bed frame, ensuring there is no uneven support from underneath that could affect its shape. The second photo confirms that this is your Lucid 5-inch mattress. Photos 3 and 4 demonstrate the degree of sagging when two 5-pound weights (a total of 10 pounds) are placed in the center of the mattress. I positioned a metal ruler across the measuring points so that its edge is perfectly aligned with the top surface of the mattress. One photo shows the ruler placed in front of the weights, and the other shows it placed behind them, allowing you to clearly see the height relationship between the ruler’s edge and the top of the weights. It is obvious that in this case, the ruler’s edge is higher than the top of the weights. Photos 5 and 6 provide a comparison, using the same two weights placed near the edge of the mattress. The ruler is again placed across the two sides to align with the mattress surface. In this case, the ruler’s edge is clearly lower than the top of the weights. By comparing the mattress’s deformation when the weights are placed in the center versus near the edge, it is clear that the center area is softer and lacks proper support.
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Reviewed in the United States on August 25, 2025 by YD