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LIFEMENT

LIFEMENT 6 Inch King Size Memory Foam Mattress, Cooling Bamboo Cover Bed

  • Based on 305 reviews
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Availability: In Stock.
Fulfilled by Lifement
Arrives Sunday, Sep 6
Order within 14 hours and 17 minutes
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Size: King (U.S. Standard)


Set name: Cooling 6 inch


Features

  • BREATHABLE BAMBOO COVER MEMORY FOAM The soft knit bamboo-blend cover on this 6 inch king size memory foam mattress wicks away moisture and lets air flow freely, so this mattress king size stays fresh and comfortable all night instead of trapping heat.
  • HIGH-DENSITY LOESS SUPPORT FOAM Underneath, a high-density base foam infused with earthy loess powder supports this king bed mattress edge to edge, resisting sagging and body impressions while keeping your spine in healthy alignment. Fiberglass free for safer sleep.
  • MEDIUM FIRM FEEL FOR EVERY SLEEPER The balanced medium firm king size mattress suits back, side and stomach sleepers alike, cushioning the body without letting it sink. A safe pick for couples, teens, kids and guest rooms.
  • PRESSURE RELIEF FOR BACK PAIN & SIDE SLEEPING Adaptive memory foam contours to your shoulders, hips and lower back to relieve pressure points and ease back pain, and this king bed mattress absorbs motion so a restless partner will not wake you.
  • BED IN A BOX FOR ANY ROOM This king mattress in a box ships compressed and rolled for easy setup; allow up to 72 hours to fully expand. Great for the bedroom, guest room, kids room or dorm, and it fits platform beds, bunk beds, slatted bases, box springs and adjustable frames no box spring needed. 10-year limited warranty.

Description

Which thickness should I choose - 5, 6, 8, 10 or 12 inch? 5 and 6 inch suit kids, bunk beds, daybeds and trundles. 8 inch fits teens, guest rooms and lighter adults. 10 inch is the everyday adult pick. 12 inch gives the deepest cradle for couples and side sleepers. How firm is medium firm, and does it suit side, back and stomach sleepers? It sits in the middle of the firmness scale. The memory foam contours to shoulders and hips for side sleepers, while the high-density support foam underneath holds back and stomach sleepers in line rather than letting them sink. Does this mattress sleep hot? It is built to run cool. Cooling gel and graphite infused into the memory foam draw heat away from your body instead of trapping it, so the sleep surface stays cooler through the night. A good pick for hot sleepers. Does it work on bunk beds, platform beds, box springs and adjustable frames? Yes to all of those, plus slatted bases, and no box spring is required. It suits guest rooms, kids rooms, dorms, daybeds and main bedrooms. Use deep-pocket fitted sheets for the 12 inch profiles. How long does it take to expand, and is the foam certified safe? Unroll it on your frame and allow up to 72 hours to fully expand; most loft returns within hours. The foam is CertiPUR-US certified and the cover is OEKO-TEX certified, removable.

Brand: LIFEMENT


Size: King (U.S. Standard)


Product Dimensions: 80"L x 76"W x 6"Th


Item Weight: 52.5 pounds


Item Firmness Description: Medium


Top Style: Tight Top


Cover Material: Polyester Blend


Number of Layers: 3


Fill Material: Memory Foam


Special Feature: Breathable, Fire Retardant, Low Motion Transfer, Temperature Regulating


Item Firmness Description: Medium


Number of Layers: 3


Additional Features: Breathable, Fire Retardant, Low Motion Transfer, Temperature Regulating


Construction Type: Memory Foam


Size: King (U.S. Standard)


Item Dimensions L x W x Thickness: 80"L x 76"W x 6"Th


Item Weight: 52.5 pounds


Item Thickness: 6 inches


Item Depth: 6 inches


Item Dimensions: 80 x 76 x 6 inches


Cover Material: Polyester Blend


Fill Material: Memory Foam


Product Care Instructions: Not Washable, Spot Clean Only


Mattress Comfort Layer Material: Gel Memory Foam, Memory foam


Material Type: Bamboo, Foam, Gel Foam, Memory Foam


top-style: Tight Top


Color: Cooling 6 Inch


Brand Name: LIFEMENT


Model Name: LIFMENT Essential Memory Foam Mattress 12K


Product Benefits: Back Pain Relief, Improves Sleep, Posture Support, Reduces Toss & Turn, Stress Relief


Model Number: E-MT-MEM-06-K


UPC: 810164540041


Number of Items: 1


Mattress Type: Standard Mattress


Manufacturer: Beyond LIfestyle, Inc.


Age Range Description: Adult


Included Components: Bamboo Outer Cover, Flame Retardant Innver Cover


Manufacturer Part Number: E-MT-MEM-06-K


Set Name: Cooling 6 inch


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Sep 6

Yes, absolutely! You may return this product for a full refund within 90 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

    • Super Comfortable and pairs well with their frame (Aesthetically and Comfort-wise)
Size: Full (U.S. Standard) Set name: Cooling 10 inch
Review Image by Samuel Pak
Package arrived super quickly and I was genuinely pleased. I'm 5'8 and transitioning from a twin size bed to a full size bed and this was exactly what I needed. The 10inch mattress is soft, easy on the back, and has a firm support. Packaging was very well done, where it was easy to set. Inflation of the mattress took maybe 15-20 minutes, and it was extremely comfortable to lay on! Temperature is unknown, as Southern California is just extremely hot right now. After it had fully expanded and inflated, the mattress definitely helped my room feel like home. Would highly recommend! ... show more
Reviewed in the United States on August 4, 2026 by Samuel Pak
    • I can’t believe how good this mattress is!
Size: King (U.S. Standard) Set name: Cooling 8 inch
Review Image by sujin
I have to be honest — when the box arrived, I was a little shocked. It looked so small and simple that I actually wondered, “Is this really a mattress?” But after unpacking it and leaving it for just one day, it turned into a perfect mattress! Fully expanded, perfectly shaped, and super comfortable. We got the LIFEMENT Essential 8 Inch Graphite Infused Memory Foam Mattress (Medium Firm), and I couldn’t be happier. There was no strong smell at all when we opened it, and I love that it’s fiberglass-free and made with safe, certified foams. It really gives peace of mind knowing it’s safe to sleep on. The comfort is just right — medium firm, but still soft enough to feel cozy. It gives great support without that sinking feeling. I can feel the difference in my back and shoulders already! The graphite-infused foam really helps with temperature, too. It stays nice and cool all night, which I love because I tend to overheat when I sleep. It’s also really well-made — the edges are firm, and the mattress doesn’t make any noise or move around when you do. My husband is very picky about mattresses and pillows because he’s a light sleeper, but even he said, “This one’s amazing.” We both wake up feeling rested and comfortable now. Moving it was super easy, too. We carried the king-size mattress up to our second floor together without any problem. It’s not heavy at all and started expanding right away after opening. Honestly, we’ve had other “memory foam” mattresses before, but after using this one, I’m not sure those were even real memory foam. This one feels so much better — supportive, solid, and really high quality. I don’t usually write reviews, but I had to for this one because it’s that good. If you’re thinking about it, just go for it. You won’t regret it. This mattress has completely changed the way we sleep — so comfortable and worth every penny! ... show more
Reviewed in the United States on October 14, 2025 by sujin
    • Best Mattress I’ve Tried in Years
Size: Queen (U.s. Standard) Set name: Cooling 10 inch
Review Image by Tay
Review Image by Tay
I’m not the type to leave reviews, but after three months with this mattress, I had to come back and talk about it. I work remotely and spend most of my day sitting, so lower back pain has been an ongoing struggle. With my old mattress, lying flat on my back made the pain worse, and I often had to sleep on my side just to get comfortable. After switching to the Lifement Mattress, I noticed a big difference. It leans slightly on the firm side, but in a supportive and comfortable way—not too soft, not stiff, just stable and balanced. I’ve also been working on improving my posture, and this mattress feels like it helps instead of adding more tension. One thing I didn’t expect is the temperature difference. I used to wake up at night because the bed got too warm, but with this mattress, I’ve been sleeping through the night without overheating. My dad recently visited me and slept on this mattress for a few days. He’s very picky about mattresses, so I was surprised when he asked me where I got it and said he wants the exact same one. Overall, I’m really happy with this purchase — especially for the price. It feels like a great find, and I’ve already recommended it to a couple of friends. ... show more
Reviewed in the United States on November 19, 2025 by Tay
    • Best sleep & Mattress I've Had in Years!
Size: Queen (U.s. Standard) Set name: Cooling 12 inch
Review Image by JS
Review Image by JS
Review Image by JS
Review Image by JS
I’ve been using this mattress for a few weeks now, and honestly, I’m really impressed. It’s super comfy – just the right mix of soft and supportive. I used to wake up with back pain pretty often, but since switching to this one, that’s pretty much gone. I've had my last mattress for a long time and definitely felt this was an upgrade. It also does a great job at not moving around too much when someone else gets in or out of bed, which is a big plus if you share the bed. The quality of materials feels premium, and it was surprisingly easy to set up. It expanded fully within a few hours and had no odor. Set-up, of course, was VERY easy. Overall, I’m sleeping better and waking up feeling way more rested. Definitely happy with this purchase! ... show more
Reviewed in the United States on September 13, 2025 by JS
    • Too flat
I purchased the 8 inch Full size and was highly disappointed in how flat it is. It’s surprisingly not uncomfortable, I just couldn’t get past the flatness; would probably be a better fit for a kids bed. On top of a box spring it’s too low to the floor.
Reviewed in the United States on June 28, 2026 by Candice Newman
    • Comfy and cozy even though it has an issue
Size: Twin (U.s. Standard) Set name: Cooling 6 inch
It’s a pretty nice mattress. It’s nice and soft. The only thing is I’ve had it out for a couple of days without use and it’s still pretty flat on one end. Hoping for the best! UPDATE: it’s been like 3 weeks now and the two corners on one end never did pop out like the other side. So I flipped it around so the flat end is at the bottom so it’s no bother to him. He’s 4 and couldn’t care less. There’s something that’s holding the mattress ends it’s into a tight position inside the cover (I assume it’s supposed to) The flat ends are pretty tight. So maybe it’s supposed to do this? I tried taking a pic and you can’t see the issue, only feel it…. ... show more
Reviewed in the United States on July 23, 2026 by Megan Skye
    • Best Amazon Purchase
Size: Queen (U.s. Standard) Set name: Cooling 12 inch
I purchased the Lifement Queen Mattress for my new mattress and it was one of the best purchases I made! The mattress is perfect for the hot/summer weather, which is such a plus. As someone who also had a back injury in the past, this mattress feels comfortable. It was super easy to inflate and I have nothing to complain about :) ... show more
Reviewed in the United States on July 25, 2026 by Sarah
    • Product review- Not true to size
Size: Full (U.S. Standard) Set name: Cooling 12 inch
I would've rated this product 5 stars but I'm very disappointed that I ordered a 12 inch mattress and received a 10 inch one. The tag stated 12 inches, however after measuring it after 72 hours of not sleeping on it, it still measured out at 10 inches. If you want a true 12 inch mattress, then you would probably have to purchase the 14 inch (if they make one). Other than the sizing issues, this mattress is extremely comfortable and noise free! I absolutely love the quality and would warn people about the sizing issue prior to purchasing. If they tell you that size doesn't matter, it REALLY does! The extra 2 inches is a MUST! ... show more
Reviewed in the United States on June 6, 2025 by SE

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