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ZINUS 6 Inch Ultima Memory Foam Mattress / Pressure Relieving / CertiPUR-US Certified / Mattress-in-a-Box, Twin , Brown

  • Based on 29,296 reviews
Condition: New
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Arrives Tuesday, Aug 16
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Size: Twin

Style: 6 Inch


  • Green Tea-infused Memory Foam With a Soft, Poly Jacquard Cover
  • General Note: Please allow 24 - 72 hours for your Mattress to regain its full shape. Any memory foam will expand faster in a warmer room. In cold temperature, at delivery, your mattress may take a bit longer to return to full sized from its compressed state.The expansion time of the mattress will vary as per the surrounding.
  • INSPIRED BY NATURE - Wholesome and natural ingredients, like green tea and moisture-absorbing charcoal work wonders in a mattress, and weve designed this one to control odors, maintain freshness, and envelop your shape so you awake restored and refreshed.PRESSURE-RELIEVING FOAMS Layers of conforming green tea memory foam and high-density Z:Base foam hug your shape to soothe you to sleep
  • CERTIPUR US CERTIFIED - Highest quality foam is CertiPUR US Certified for durability, performance, and content
  • EXPERTLY PACKAGED - Our technology allows this mattress to be efficiently compressed into one box thats easily shipped and maneuvered into the bedroom; please open your mattress box within 72 hours of receipt and let this mattress decompress
  • Worry-free 10 year limited warranty included; twin mattress supports a maximum weight of 250 lbs, while all other sizes can support up to 500 lbs
  • 1.5 inches conforming memory foam.4.5 inches durable, high-density base support foam


There’s no comfort quite like the kind you get from a big hug. The Ultima Memory Foam Mattress delivers just that -- enveloping comfort that fits your shape like a glove to soothe you to sleep. Created with a special blend of high quality foam layers, it features our famous green-tea and charcoal infused memory foam for a mattress that stays fresh and odor-free over time. An airflow-boosting layer of cradling Z:Comfort foam and a durable Z:Base foam layer finish off this fine-tuned system of top quality foams so your body’s curves are supported and allowed to rest naturally, leading to sounder sleep with no more aches and pains. This skillfully crafted design arrives at your doorstep in one wondrous package and instantly begins to expand to its original glory once unboxed; it’s as simple as that! Already loved and highly rated by thousands of happy customers, the Ultima mattress includes a 10-year worry-free warranty, so you can be sure that it will put both your body and mind at rest.

Product Dimensions: 75 x 39 x 6 inches

Item Weight: 20.6 pounds

Manufacturer: Zinus, Inc

Country of Origin: China

Item model number: M-FMS-600T

Is Discontinued By Manufacturer: No

Item Thickness: 6 Inches

Fabric Type: Green Tea-infused Memory Foam With a Soft, Poly Jacquard Cover

Fill material Type: Memory Foam

Assembly Required: No

Warranty Description: Worry-free 10 year limited warranty included.

Batteries Required?: No

Included Components: Mattress

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Aug 16

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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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews

  • Amazing product and customer service
Size: King Style: 12 Inch
I was very leery about purchasing a mattress online, however after seeing a couple of reviews on Amazon I purchased a 12" zinus king size mattress. A big box shows up at the door and we did not wait to dispose of the old mattress and opening the new one at 7 am on a Friday. The mattress starts to gloriously unfold and to my surprise, the mattress isn't big enough. I panic, check my order and it says I ordered a king, check the inside of one of the boxes and nothing states the size of that thing, checked the other box and it says queen... at that point I have no bed since I throw the old mattress away, and I have a queen mattress growing on a brand new bed frame but it's not what I ordered. I contacted Amazon (which is where I purchased it from) and they are no help at all... they guy is like "well let's get you a full refund and I'll give you a discount on a new one, it will only take about two weeks to complete" what does that do for me? Nothing. And how was I supposed to return this queen mattress, when it's already unfolding? It came in a box, how do I fit it back in that box? Oh and I have no bed to sleep on! I panicked a little bit more, started sobbing and then I contacted Zinus via Facebook... Immediately received a call from a guy named Chris, he apologized for the whole thing and says "we are so sorry for this, we will send you a new king size mattress and you can keep the queen you received, we will cover the costs to make it an expedite shipping". Next thing I know after a couple of days I have a brand new king size mattress at my door. I put it on the bed, watch it magically grow and I can honestly say I can't be happier! Not only your product is amazing but your customer service was beyond great! Thank you Zinus for turning a crappy experience into something outstanding! ... show more
Reviewed in the United States on October 17, 2017 by Bee L Bee L

Size: King Style: 8 Inch
Buyer PLEASE Beware! I thought I was getting a great deal with this mattress turns out I got a medical nightmare instead. The fibers that they make the protective covering out of shed into tiny airborne fibers that you then breathe in they are similar to fiber glass. They get embedded in your skin causing itching and irritation and also when breathed in caused breathing issues. My husband and myself both started having horrid allergy issues and my husband ended up even having sinus surgery. Turns out our issues are from breathing in these tiny fibers! Very upsetting. PLEASE PLEASE DO NOT BUY!!!! It took us a year to finally figure out what was causing. I know have damage to my lungs from breathing in fiber glass . There should definitly be a law suit banning these as hazardous. ... show more
Reviewed in the United States on July 24, 2018 by E. Peacock E. Peacock

  • In short, simply blown away!
Size: Queen Style: 8 Inch
This review is after about 3 months of usage. In short, simply blown away! This is by far the best 'thing' I've ever slept on. From floors to air pads, dorm room bunks, blow-up mattresses, dingy motels, and 5-star hotels - you name it, I've slept on (or in) it. In detail, I'm 6'5", 180lbs and went with the queen 8" mattress for me and the full 4" mattress for my daughter. I slept on a luxury queen pillow top mattress and box spring for the last 6 years. We moved into a new place and I decided to use these mattresses temporarily while I took the time to test out my next long term set. On morning number one, for both my daughter and I, we couldn't stop talking about how insanely comfortable the mattresses were. Here are some factors that coincide with my experience. With my Garmond health monitor, I could see a distinct positive difference in my deep sleep cycle between the previous mattress and this Zinus Sleep Master. I used to fall asleep with books, magazines, remote control on the bed next to me and wake up with them on the floor. Now, they stay right where I left them. I may roll over once or twice but I usually wake up in the same position I fell asleep in and when I wake up, I'm awake! It's almost scary to realize how much of my life went by without this kind of rest. I did read a ton of comments and the ones that cause most concern I'll compare. First, the packaging was fine. The box is big and bulky but I could carry it up 2 flights of stairs without rest or the need for help. The mattress comes vacuum sealed in a thick plastic wrap. Be careful slicing it open as it's tight on the mattress and you can accidentally cut the removable (and washable) zippered wrap or even into the mattress itself. Regarding the odor that people have noted in other comments. There was a factory/chemical/plastic smell. I'd have to say something closer or comparable to a very light 'new car' smell. Like anything new I wear or sleep under, I washed the thin zippered wrap by itself and dried it once. I've always put a couple dryer sheets on a mattress when I change sheets and did so again with the Zinus mattress. There was no chemical smell after washing the wrap and I'm actually in bed now laying on it while writing this review and there's no smell at all. There was no mold anywhere to be seen. It's unfortunate that people experienced it and I'm not sure if it's a factory issue or a storage issue. Both mattresses came vacuum sealed in heavy plastic - heavy enough to keep the mattress compressed until it was removed from the box AND cut open. I didn't see it mentioned whether or not the mattress seal was broken or the box it came in had any damage. I'd be turned off as well if I saw that kind of mold and wouldn't buy again but having slept on it - It's worth returning for a new one in my opinion. It did take several hours to uncompress. No more than 24 hours for the 4" and 8" sizes but we both slept on them the same evening and experienced an incredible sleep. I did purchase two collapsible smart frames (another great purchase I'll have to review later). There's literally no need for a box spring in my setup as the smart frames are high and built to use bins underneath for storage. As is, they would replace your current mattress and sit on top of your current box spring. My daughter had a fruit punch Gatorade (red) that was not sealed all the way in her soccer bag. It leaked into the center of the mattress about a month ago. To clean, we used a little detergent and warm water to saturate the spot and pressed a towel down to absorb it. Repeated until there was no red coming up but there is a noticeable red stain (as there would be on any mattress I'm sure). What made it easy to absorb is that you can push down into the mattress without air or spring coils so saturating the spot with clean water and detergent really got the bulk Gatorade out. In the future, I would get the 12" for myself (because I enjoy a high bed) and the 8" can go to the guest room. I'll be getting another 4" full size for the pull out sofa mattress and I'll get my daughter a 4" twin when she goes off to college. ... show more
Reviewed in the United States on February 19, 2017 by Anthony

  • Best $130 Ever Spent
Size: Full Style: 6 Inch
To everyone who gave a bad review: If you have money for a better mattress, buy one. If you are looking for the miracle mattress that is going to be "one heck of a bang for your buck," don't buy a mattress for under $200. If you are buying this for your "spare bedroom," either buy the same mattress you sleep in or don't complain lol. I AM VERY PLEASED. This mattress is nothing but perfect. The "smell?" You realize it was probably made in a factory right? That's the smell of fresh product...... it's also SO COMFORTABLE AND NOT TOO FIRM AT ALL! I am 125 lbs and of course it doesn't "form to my body like memory foam should," but it is better than spending $1k on a mattress. I am thankful a company is able to sell me something so great to improve my quality of life for under $200. ... show more
Reviewed in the United States on September 11, 2017 by Amazon Customer

  • Fiberglass!!!
Size: King Style: 8 Inch
Furious. If I could give no stars I would. Took the mattress cover off to wash it and there's fiberglass everywhere!!! Beware! Do not buy. My kids and I are covered in it!!
Reviewed in the United States on March 15, 2018 by Andrea Willobee

  • Fiberglass shards
Size: Queen Style: 8 Inch
The cover has a layer of fiberglass that will start to fall apart and poke out everywhere.
Reviewed in the United States on July 28, 2018 by JustSomeGuy

  • Beware Health Hazard!!
Size: Full Style: 8 Inch
The cover for this mattress is made up of 62% fiberglass in the form of tiny shards of dust like particles which can get on everything in your house, your car, clothes, etc. Fiberglass is an irritant and many medical professionals believe that it can cause cancer. Small particles like those found in this mattress can be inhaled, embedded in the pores of your skin, etc. ... show more
Reviewed in the United States on January 11, 2019 by LB LB

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