Zinus Sleep Master Ultima Comfort Memory Foam Mattress Review

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Zinus Sleep Master Ultima Comfort Memory Foam Mattress Review

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Zinus has been in the mattress business for more than 20 years and has built a good reputation over this long period of time for their quality and affordability.

As expected,  Zinus Sleep Master Ultima Comfort Memory Foam Mattress under this review is a budget option that holds up well against its much more pricier competitors.

Even though it is not as popular as its sibling, the Zinus Green Tea mattress (one of our top recommendations), the Ultima Comfort mattress dominates the lower price bracket and appeals to folks with a tighter budget.

As we’ve observed time and time again, sleeping preferences can be vastly different from one individual to the next. Therefore, we will not talk about our individual experience with the mattress in this review.

Instead, we strive to provide you with detailed information about Zinus Sleep Master Ultima Comfort Memory Foam Mattress and summarize the reviews from hundreds of customers so you can arrive at an informed buying decision.


Zinus Sleep Master Ultima Comfort Memory Foam Mattress Review


The Zinus Sleep Master Ultima Comfort is an 8 inch memory foam mattress that features their patented BioFoam technology.

Basically, the inner layers of memory foam base in this mattress are constructed with natural plant oils, replacing of some of the standard petroleum to help keep the mattress fresh and pleasant smelling.

As with most of its competitors, this Zinus mattress is available in multiple thicknesses to appeal to the mass:


zinus sleep master ultima comfort memory foam mattress review layers


  • Top Layer: Biofoam Memory Foam. This layer is directly underneath your and conforms easily into the natural shape of your body.
  • Middle Layer: Pressure-relieving Comfort Foam. This layer distributes body weight evenly to prevent build-up of pressure against common pressure points such as neck and back.
  • Bottom Layer: HD Base Support Foam. This layer provides support and maintain structural integrity of the mattress. Prevents sagging and caving.


These layers are enclosed in a knitted Jacquard cover that features a smooth surface. The zip-cover is breathable and easy to clean.

The illustration above applies to the 8-inch variant of Zinus Sleep Master Ultima Comfort Memory Foam mattress. The thicker versions consist of the same 3 layers with varying thicknesses.

When it comes to firmness, the thicker variants are plushier due to the difference in memory foam thickness. With that said, you can always add mattress topper if you find the 8-inch variant is a bit too firm for you.

In terms of body weight distribution and body ache prevention, memory foam is far superior to the previously popular spring mattresses.

The body contouring properties of memory foam ensure better blood circulation and a decrease in the occurrence of pressure and bedsores.

This contouring also ensures better weight distribution across the mattress and therefore better support for your whole body, reducing the pain associated to ailments such as Sciatica, Arthritis and common back pain.

For the many people suffering from these ailments, the lack of support from a spring mattress aggravates the pain during the night and makes it very difficult to get out of bed in the morning.

Apart form that, memory foam absorbs 80% of the motion transfer caused by partners or pets moving around on the bed, so it’s ideal for couples who toss and turn around a lot during the night.


zinus shipping box


No matter which variant and size you buy, the mattress is compressed and shipped to your doorstep in an unassuming box.

Inside the box contains the mattress that is sealed in a tightly vacuumed plastic wrap. Be careful when you are slicing up the plastic wrap as it’s tight and you may accidentally cut into the Jacquard knitted layer that is removable and washable.

Leave the mattress to decompress for at least 24 hours before sleeping on it. Make sure it expands to its intended thickness before using.

It’s normal to have a bit of initial off-gassing and chemical smell when it’s first unwrapped. Some customers described it as a new car smell and it should go away within 24 to 48 hours.


Certification of Zinus Sleep Master Ultima Comfort Memory Foam Mattress


The high density foams used in the mattress are Certi-Pur certified, meaning that they are made without ozone-depleting chemicals and are regulated by Consumer Product Safety Commissions Low VOC (Volatile Organic Compound) emissions for indoor air quality (less than 0.5 parts per million).

Being Certi-Pur certified also means that the mattress does not contain PBDE flame retardants, mercury, lead and heavy metals, as well as formaldehyde and forbidden phthalates.

This certification is becoming more important and shaping up to be a gold standard (along with other certifications) in the mattress industry for health considerations.

According to U.S. Environmental Protection Agency (EPA) website, VOC can cause health effects such as ENT irritation, headache and nausea, damage to liver, kidney and central nervous system, and it is even suspected to cause cancer in humans.

All memory foam mattresses recommended in this website are Certi-Pur US certified.


Zinus Sleep Master Memory Foam Prices and Warranty


As the prices of mattresses fluctuate over time, we choose to provide price group (in relation to competitors) instead of actual numbers to prevent discrepancy with prevailing rates. Prices and weight in the table below refers to the 8 inch variant.

To check the current prevailing prices, follow the link to Amazon product page.

To compare Zinus memory foam mattress against other manufacturers with similar offerings, refer to the brands comparison section below.

All Zinus memory foam mattresses come with 10 years limited warranty.

Customers are given 30 days trial. Keep in mind that there may be shipping and handling charges if you decide to return the mattress within the trial period.


Customer’s reviews


Customers have rated this mattress as a 4.6 out of 5 star product with 75% of the clients rating it five out of five. Only 11% of the people who bought the Ultima Comfort Memory Foam 8 Inch Mattress felt it warranted less than 4 stars and the majority of the negative feedback was because the bed did not inflate to the full 8 inches. Some people felt the bed was not firm enough for them and others thought the bed was too firm. An individual preference for bed comfort differs from person to person and the best description for this eight-inch mattress is that it is medium-firm.

In some cases the chemical smell did not dissipate as fast as expected and the bed was unpleasant to sleep on. In most cases however the smell had disappeared within 48 hours of the bed being decompressed and one of the reviewers washed the cover and the smell disappeared completely. The return policy has caused allot of the complaints on the website as Zinus do not refund or replace mattresses purchased on Amazon once it has been opened.

More than 89% of the buyers were very happy with the mattress, scoring it 4 stars or more. One of the reviewers even mentioned the only bad thing about the mattress was that he needed to get up the next morning. Most people found the firmness and support to be a perfect combination and the body contouring left you feeling as though you “ sink” into the mattress but still get the support you need.

A large percentage of the reviewers mentioned that pain previously experienced, especially back pain, was relieved after a night’s sleep on the mattress. Some customers called the Zinus customer line for assistance in choosing the right bed for their needs and found the call takers to be very helpful and after purchase were happy with their decision.

Should you buy this mattress?

The Zinus Sleep Master Ultima Comfort Memory Foam 8 Inch Mattress is a great buy if you enjoy a comfy medium hard mattress and good body support.

Should you suffer from back pain, arthritis sciatica nerves or any other physical ailment, the support offered by this bed will decrease your pain and improve the quality of your sleep.

All Zinus Mattresses are CertiPUR-US certified and tested for performance and durability. Zinus’ patented Biofoam mattresses infused with natural plant oils, green tea extract and all-natural charcoal will ensure your bed remains pleasant smelling by absorbing moisture and keeping the mattress fresh, a big advantage if you suffer from overheating during the night.

Purchasing a Zinus Mattress on Amazon does however come with a very limited warranty and as some clients mentioned in their reviews, they could not return the product. The warranty does cover defects in workmanship and materials but at the discretion of Zinus and does not cover deterioration of the foam or sag in the foundation.

The Zinus mattress has been scored very highly by customers who have purchased it and for the cost of $179.00 has been rated as very good quality for the cost.

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