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LUCID

Lucid 10 Inch Memory Foam Mattress - Medium Feel - Infused with Refreshing Bamboo Charcoal and Cooling Gel - Bed in a Box - Temperature Regulating - Pressure Relief - Breathable - King Size

  • Based on 41,252 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Apr 29
Order within 7 hours and 25 minutes
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Size: King


Style: 10"


Pattern Name: Medium


Features

  • Memory Foam
  • SHIPS IN A BOX AND ARRIVES COMPRESSED: Your memory foam mattress is compressed, rolled, and shipped in a box right to your doorstep; mattress will expand more quickly in a warm room, but please allow 24-48 hours for mattress for full expansion
  • BAMBOO CHARCOAL AND GEL INFUSIONS: This comfortable memory foam mattress is infused with cooling gel to help you sleep cooler and bamboo charcoal to help capture odors to keep your bed fresh all day every day
  • PRESSURE RELIEVING MEMORY FOAM: This all-foam mattress has layers of comfort foam and memory foam that contour to your shape and align the spine for pressure relieving comfort all night long
  • THREE FEELS TO ACCOMMODATE ALL SLEEP STYLES: Choose between a firm feel for stomach sleepers and those with back pain, a plush feel for side and back sleepers, and a universal medium feel for multi-position sleepers
  • RELIABLE AND QUALITY COMFORT: CertiPUR-US Certified to meet quality standards, this mattress has a 10-year limited warranty and can be relied on to provide comfort for all your loved ones through every stage of life

Description

At Lucid, we believe you deserve a mattress that makes you feel your best self—because great sleep makes your day feel like a dream. When looking for universal medium support, the Lucid 10 Inch Medium Gel Memory Foam Mattress is the perfect match(ress). This mattress is compatible with all types of bed frames and is great for a primary suite, guest bed, rental property or teen’s bed. A medium feel is the perfect universal feel, ideal for all sleep styles, including back sleepers, side sleepers, and stomach sleepers. A 3-inch layer of gel and bamboo charcoal infused memory foam, a 1.5-inch layer of transition foam, and a 5.5-inch layer of high-density support foam gives a medium feel. The gel infusion helps regulate body temperature and the bamboo charcoal infusion helps keep your bed fresh thanks to its natural moisture-managing properties. Keep dreaming, we've got sleep covered.

Brand: LUCID


Size: King


Product Dimensions: 78.9"L x 37.4"W x 15.5"Th


Item Weight: 70.38 Pounds


Item Firmness Description: Plush


Top Style: Smooth Top


Cover Material: Polyester


Number of Layers: 3


Fill Material: Gel Memory Foam, Memory Foam


Special Feature: Breathable, Hypoallergenic, Low Motion Transfer, Pressure Relief


Product Dimensions: 78.9 x 37.4 x 15.5 inches


Item Weight: 70.4 pounds


Manufacturer: LUCID


Item model number: LU10KKMD30GF


Thickness: 10 Inches


Fabric Type: Memory Foam


Refill: Gel Memory Foam, Memory Foam


Care instructions: DO NOT REMOVE OR WASH COVER. Spot clean only Vacuum your mattress, sprinkle some baking soda on it. Use a scrub brush to gently rub the powder into the mattress and leave it for 10 minutes or so and vacuum the excess powder., Do not wash. Do not use bleach. Do not machine dry. Do not iron. Do not dry clean.


Specifications: CertiPUR-US


Assembly required: No


Number of pieces: 1


Warranty Description: 10 year warranty.


Batteries required: No


Included Components: Compressed Mattress


Age Range Description: Adult


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Apr 29

Yes, absolutely! You may return this product for a full refund within 30 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 comfort and no smell!
Size: California King Style: 10" Pattern Name: Medium
Great quality and comfort. We have owned this mattress for 5 years now and never had an issue with it. You can not beat the price and also, NO SMELL NOR FIBERGLASS! We have had terrible experiences with other brands and Lucid did not disappoint.
Reviewed in the United States on February 6, 2026 by Eric Villa
    • Mattress: Perfect. Amazon: horrible.
Size: Twin Style: 10" Pattern Name: Medium
The Mattress: This Lucid 10" is insanely comfortable. I was skeptical after fighting Amazon just to get it here, but once it showed up and expanded, I didn’t want to get out of bed. Less soreness in the mornings, super comfy whether I’m on my side or stomach, and supportive without feeling like a brick. This is the softest medium I've ever felt and at first I was skeptical but after waking up, it's just right. For the price, it’s a ridiculous win. The Buying Experience (Amazon): Getting it delivered was a nightmare. Amazon dragged their feet, messed up shipping, and made the process far harder than it needed to be. Honestly, the only thing saving this experience was the mattress itself. If you want the product, do it—but be prepared for Amazon to screw up the logistics. ... show more
Reviewed in the United States on September 5, 2025 by AnonTheory
    • Great price for comfy mattress
Size: Full Style: 10" Pattern Name: Medium
great ...bought 10" but wish i would have bought bigger. I rent out my upstairs and everyone loves this mattress...great price too
Reviewed in the United States on February 20, 2026 by Dawn Lamb
    • It’s almost perfect
Size: Queen Style: 10" Pattern Name: Medium
I had purchased the plush Lucid mattress for my other house & that one was PERFECT. Needed another mattress & for some reason could not ship the plush to Hawaii. But the medium mattress could be shipped, so I went with that. If you are reading this then you know mattresses are a very personal choice. How can a mattress feel like sleeping in a cloud & also feel like sleeping on a slab of concrete? Is there truly that much difference in 2 people’s experience? Or is it quality control of the memory foam? At any rate, I had a good experience with Lucid once. And had a bad experience with a different brand where the new mattress had zero support & gave me back pain like I’ve never experienced before. It also was so hot! And if you get the mattress & don’t like it, good luck getting it back into the box & returning it! I ended up selling it to some poor soul that didn’t know what a torture thing the mattress was. But hey, there were a gazillion 5 star reviews on that brand. Maybe the buyer got an almost brand new “like sleeping on a cloud in an inferno” for a fraction of the price! Anyways, back to this medium support Lucid. It’s OK. I wake up with ZERO back pain & does not retain heat, so maybe it does deserve a 5 star instead of 4 star. But, I just wish it had a tad bit more softness. Like maybe one or two more inches of soft memory foam. I’ve had it for a couple months. I am hoping as it breaks in it will soften up a bit. This mattress is probably good for people larger than I. And I sleep alone with a couple little furry friends. I tried putting a 3” memory foam mattress topper on it but it was too much, a little too soft. Maybe a 1” or 2” topper will work. Don’t get me wrong, I really do like this mattress. No back pain is worth a lot!!! This mattress is almost perfect! I would have traded the plush for this medium, but he let the old dog sleep on it with no waterproof protection & guess what? He can keep it! Also, the softer they are the faster they degrade. That plush mattress… the person sleeping on it is about 30-40lbs heavier than me. He’s been sleeping on it for 5 years & its has an indentation where he sleeps. But he has not complained about that. He does complain about the fact that there’s no support at the edges when you sit. That is true for any memory foam mattress. He ended up putting padded side boards on his bed frame to give it support (my bed frame already has side boards, which is perfect for memory foam!) I really wish I could have ordered the plush Lucid, even if I would have to replace it in 5 years. For the price, to me, it’s worth it. That plush mattress was perfect, this medium is almost perfect & since it is firmer, hopefully it will last a little longer. Good luck with the search for the perfect mattress! If you can afford to pay a little more, buy one at Costco or somewhere that you can return it if it doesn’t work for you. Or go to a mattress store & take a lie down on different brands. Or lie down on a friend’s memory foam & see how it feels. There’s just no way to know, since every mattress on Amazon has contradictory reviews. I do believe that if you are not sure, go with the firmer one. If it’s too firm, you can always put a topper on it. But if it’s too soft & causes crippling pain & makes you feel like you are sleeping in an inferno of heat, you are pretty much screwed. I do recommend this medium Lucid mattress. It is a good mattress at an affordable price. ... show more
Reviewed in the United States on January 2, 2022 by Kau Lehua
    • SO HAPPY WITH THIS
Size: Twin Style: 10" Pattern Name: Medium
I am always so skeptical about buying a mattress online with the fear of what to do if I have to return it! DO NOT FEAR WITH THIS MATTRESS. It is wonderful. It was easy to unbox, it expanded perfectly (even the corners) and it is exactly what I was expecting as far as the pressure I selected (I got medium). The memory foam isn't too soft or too firm and I have been sleeping super hard since day 1 of sleeping on it. My husband who has back issues and normally prefers a firm mattress will lay on my side (we just have twins put together) and say "wow this is so comfortable" and then I have to tell him to get back on his side hahaha. I have nothing but great things to say about this mattress. For the price point, I feel like I have gotten my moneys worth out of it. I've only had it a few months so I'm not sure how many months or years I will get out of it, but right now I don't really care because I am sleeping great and my back doesn't hurt. Highly recommend!! ... show more
Reviewed in the United States on March 28, 2024 by Katie K
    • Comfy & affordable
Size: Queen Style: 10" Pattern Name: Medium
Have both the firm and now medium. Thought the firm was decent, medium is even better if you like to sink into mattress a bit. The plush would be too soft for me. Sleeping great with the medium.
Reviewed in the United States on July 14, 2025 by Edog
    • Love our Lucid Mattresses
Size: Full Style: 10" Pattern Name: Medium
Bought for our daughter and she loves it. We have 5 Lucid mattresses in our home from King down to twin. They are comfortable, durable, cool and just wonderful to sleep on. No sense in paying more than you have to. Lucid is an amazing value and a great bed!
Reviewed in the United States on December 1, 2025 by Bkinsey

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