Lucid® 14" Medium Firm Gel Memory Foam Mattress – Bamboo Charcoal & Cooling Gel – Fiberglass Free – Bed in a Box – CertiPUR-US® Certified – King Size
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Availability:
In Stock.
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Tuesday, Aug 11
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Size: King
Style: 14"
Pattern Name: Medium Firm
Features
- 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
- MEDIUM FIRM FEEL: A medium firm memory foam mattress at a luxurious 14-inch profile uses layered memory foams to cushion pressure points and a high-density base to keep back sleepers, combination sleepers, and couples aligned. Compatible with adjustable bases
- DESIGNED FOR COMFORT: Four layers of memory foam mattress construction: 3 inches of layered bamboo charcoal and gel memory foams, a 2-inch transition memory foam layer, and a 9-inch high-density base; a thick, premium build for primary bedrooms and suites
- 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® 14-Inch Gel Memory Foam Mattress is the jewel of the lineup; a thick, generously built mattress that brings a luxury feel to your primary bedroom without the luxury price tag. Available in Medium Plush or Medium Firm. The Medium Plush version features cooling gel and refreshing bamboo charcoal infused memory foam and a dedicated 3-inch transition layer underneath—a premium mattress that contours closely to your body and delivers genuine, cloud-like pressure relief. The Medium Firm version uses the same premium materials but with a firmer tune—a medium firm mattress ideal for back sleepers, combination sleepers, and couples with different preferences. Both are compatible with adjustable bases and all flat foundations. 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, relieves pressure points, promotes airflow, minimizes motion disturbance |
| Material Composition | High-quality foam layers including gel-infused and traditional memory foam |
| Brand | LUCID |
| Dimensions | 79"L x 75"W x 14"H |
| Color | White |
| Model | LUCID 14 Inch - Medium Feel with Gel Infusion, Hypoallergenic Bamboo Charcoal, Breathable Cover |
| Product Advantages | Delivers superior comfort by combining cooling technology, hypoallergenic materials, and moisture control for a restful sleep |
| Maintenance Advice | Spot clean only, vacuum, use baking soda for deep-clean, avoid water and heat exposure |
| Exterior Fabric | Premium polyester blend |
| Weight | 85.8 lbs |
| Item Code | LU14KKFR50AF |
| Initial Sale Date | March 19, 2020 |
Frequently asked questions
The Lucid 14 Inch King Mattress comes with a variety of beneficial features. It's a medium firmness memory foam mattress, providing an optimal level of support and comfort. It incorporates bamboo charcoal foam, which can help in controlling temperature and eliminating odors. Additionally, the mattress is gel-infused, which can help keep you cool throughout the night. It is also hypoallergenic, making it ideal for individuals with allergies. The mattress is conveniently delivered in a box for easy setup and is CertiPUR-US Certified for safety and performance standards.
Yes, the Lucid 14 Inch King Mattress is designed for easy setup. As a bed-in-a-box mattress, it comes compressed and rolled up in a box. After unboxing, it will need some time for it to expand to its full size. The process is straightforward and should not require professional assistance.
The Bamboo Charcoal foam in the Lucid 14 Inch King Mattress helps to regulate moisture, odor, and temperature. This unique feature aids in creating a clean and comfortable sleeping environment.
Yes, the Lucid 14 Inch King Mattress is certified by CertiPUR-US. This means it is free from harmful chemicals and meets strict guidelines and standards for content, emissions, and durability, ensuring a high standard of safety and performance.
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Top Amazon Reviews
🚀 Abunda's Overview
This is our summary and key points to consider based on customer reviews.
The overall reviews for this mattress are highly positive, with consumers praising the comfort, pain relief, and value for money. Despite its large size, customers describe the mattress as supportive but not too firm, and it seems to perform particularly well for those with back issues or conditions like fibromyalgia. However, the break-in period and few complaints about the mattress feeling too soft are noted.
Pros
- 🛏️ Extremely comfortable and forms well to different body shapes and sizes
- 💤 Promotes uninterrupted sleep and pressure point relief, especially beneficial for those with chronic pain conditions
- 💲 Great value for money compared to other brands
- 📊 High-density foam layers provide excellent support
- 🤫 Absorbs motion well, perfect for those sharing their bed
Cons
- ⏳ Break-in period required. The mattress gets softer over time.
- ☁️ Some customers felt the mattress was too soft.
- ⏱️ Tracking and delivery system could be improved.
Should I Buy It?
Yes, if you're seeking improved sleep and comfort, this mattress appears to be a solid investment. It's particularly recommended for those with specific pain points or aching muscles, but keep in mind it may be too soft for some sleepers' preference.
Size: California King
Style: 12"
Pattern Name: Medium Firm
This mattress is wonderful. Amazing comfort and well priced. Nice and cool all the time. Was super easy to set up. Just carefully cut out of the package and let expand. I love how well a sheet fits to this bed and don’t come off like traditional beds. Material seems durable so far. Only time will tell. Unsure of the water resistance. Have not tried that. Shipping was quick. Would recommend!!
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Reviewed in the United States on March 29, 2026 by Benjamin Gore
Size: Twin
Style: 6"
Pattern Name: Medium Firm
If you get back ache when you get up in the morning, it's time to change the mattress. Indeed, my old mattress had a visible depression in the middle, and was not supporting my back. In addition to this, my worn out knees felt pain, for the mattress is bowed up, when my body weight is placed on it. Since there is not much cartilage left in my knees, this bowed up situation puts undue pressure on the knee joints. Too often I wake up in pain in the middle of the night and gingerly shift the position. If this resonates with you, then you might want to consider this mattress in the 'firm' rating. It's a memory foam, and it hugs your body contour. The whole body, that is every part of the body that is in contact with the mattress, is supported. Even though it is rated "firm," it does not feel hard; it is actually soft--it will readily give to the weight of your body--but it will hold your body up, without being plush. Plush is bad for your back. Your body is not sinking into the mattress. In this sense, it is 'firm.' I slept on it the first night, and I feel already the difference: my back hurts less. I could straighten up, without the great pain I used to feel. I think it will get better and better. So worth the money I paid for it. I will give 5 stars, after I slept on it for a week. For now it is 4 stars. After One Week report: I must say, I am glad I bought this mattress. The morning after the first night of sleep on this mattress, my back hurt less--about one half? As I slept on the mattress, the back pain significantly diminished. After 7 nights of sleep, the back pain is maybe 1/5 of what it was before. I now can get up and straighten myself without difficulty. Good stuff!
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Reviewed in the United States on March 9, 2024 by Pope Zeke IV
Size: Twin
Style: 6"
Pattern Name: Medium Firm
Having used spring mattresses for over 20 years, decided to finally switch to memory foam. This mattress was a good value and after about 2 weeks of use, it has converted me. There were both good and bad that I experienced within the past 2 weeks. The good: --Is firm as any spring mattress I've owned --The length and width fit a Twin size perfectly so it will existing cots, bunk beds, box spring, etc --It comes with a fitted cover and straps in the bottom, and was sealed fully in plastic out of the box --The initial chemical smell didn't last more than a couple of days, and I used a couple of fitted sheets initially and that helped in tue first couple of days --All my existing Twin sheets all fit this mattress --The firmness is perfect for anyone with back problems like me --It stays cooler than my previous mattress so it's more comfortable to sleep --Does not make any squeaking sounds like springs so don't have to disturb the other person in the room when tossing/turning at night. The bad: --It took 2 more days to inflate fully than expected --The height was listed as 6" but after fully inflating it measured around 5.6" to 5.7" --There were no instructions included about washing or removing the fitted cover it came with --Realized quickly that can't sit on the edges of the bed like a regular spring mattress - I slid off when I tried to do this on this mattress Overall a great bargain, and almost perfect in every way. Will consider replacing all my future mattresses as they expire with this brand.
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Reviewed in the United States on February 26, 2024 by Mr. Dip
Size: Queen
Style: 8"
Pattern Name: Medium Firm
I recently purchased the Lucid 8 Inch Queen Firm Memory Foam Mattress, and I couldn't be happier with my decision. This mattress has completely transformed my sleep experience for the better. First and foremost, the firmness level is just right. It provides the perfect amount of support for my back, ensuring a comfortable and restful night's sleep. I wake up feeling refreshed and without any aches or pains. The 8-inch thickness strikes a great balance between support and plushness. It's not too thin to feel the underlying structure, yet not too thick that it compromises the supportive feel of a firm mattress. The memory foam contours to my body, offering a personalized and cozy sleeping environment. One of the standout features for me is the breathability of the mattress. The memory foam is infused with cooling gel, which helps regulate temperature throughout the night. No more waking up in a sweat – this mattress keeps me cool and comfortable all night long. Setting up the mattress was a breeze. It arrived in a compact box, and once I opened it, it expanded to its full size within a few hours. The quality of materials used is evident, and I appreciate the attention to detail in the construction. As a bonus, the Lucid mattress comes with a soft and breathable cover that is easy to remove and clean. This adds an extra layer of convenience and ensures that my mattress stays fresh over time. In conclusion, if you're in the market for a firm memory foam mattress, the Lucid 8 Inch Queen is an excellent choice. It combines the perfect level of firmness, support, and comfort for a great night's sleep. I highly recommend this mattress to anyone looking to upgrade their sleep experience.
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Reviewed in the United States on January 31, 2024 by Ruchit
Size: Queen
Style: 14"
Pattern Name: Medium Firm
Now let me start off by saying I have a sleep disorder and typically get about 6-6.5 hours of non consecutive sleep a night. I’ve also been in a high stress situation since Christmas of 2023 which was finally relieved when I moved into this new space. I bought the medium firm 14” mattress and started sleeping on it only a week ago. I’ll be sure to update as time goes on. I needed something more firm as I am definitely a side or stomach sleeper but I didn’t want it to be so firm that I felt like I was sleeping on concrete. I also really wanted a taller mattress since I like to sit on the edge pretty frequently, and I don’t love a low bed cause getting in and out can be difficult... This was perfect. It was super easy to unroll and set up. I left it in my new place for a week before sleeping on it, but I think it would’ve been ready the next day to sleep on. It also didn’t try to hit us in the face when we unwrapped it which was a win. It fit my bed frame perfectly which was expected. It makes no noise, but I’m also the only person sleeping on it so do with that what you will. No smell. Great price for a quality mattress from Amazon. I just need another set of sheets for the thicker mattress, but my 12” set still works for now…LOL I would definitely buy this brand again in the future. I’ll update again in a few months to a year as I typically have chronic back, neck and knee pain that I’m hopeful this will help with. I can say that after a week I’m feeling confident that it’ll only get better.
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Reviewed in the United States on March 22, 2026 Reviewed in the United States on March 22, 2026 by Joelle
Size: Twin
Style: 8"
Pattern Name: Medium Firm
I ordered this mattress because it was firm. I cannot sleep on a soft mattress due to back problems. This mattress is Very Firm. Too firm if you have Fibromyalgia like I do. But I love it. So I ordered a mattress topper to lessen the hardness on my body. Especially my shoulders when side sleeping because I had a bad fall years ago and injured my shoulder and back. But if you are looking for Firm then this is the mattress for you. No regrets and I highly recommend. It inflated fully in less than 2 days. There was Never any Smell at all. I'm happy I went with my gut instinct to try it out. Update: I purchased the mattress topper and it definitely took the edge off of my Fibromyalgia and Back pain.
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Reviewed in the United States on January 18, 2024 by Ms B
Size: Twin XL
Style: 6"
Pattern Name: Medium Firm
Very comfortable
Reviewed in the United States on May 18, 2026 by Rebecca Owens
Size: Twin
Style: 14"
Pattern Name: Medium Firm
AMAZING MATTRESS! We got these for our luxury Airbnb and so much compliments!
Reviewed in the United States on May 17, 2026 by LP