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​Author: Maurice Savaryego, M.Sc.Eng. (Learn More)

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Please note that our website is supported by our readers: any sales made via the Amazon product links used on this site earns us commissions from Amazon.)

Compare Top Memory Foam Mattresses: Zinus Ultima Comfort vs. Signature Sleep Memoir

Zinus Sleep Master Ultima Foam MattressPhoto Credits: Zinus
Memory foam mattresses minimize pressure on the body and provide balanced support. They achieve this by molding to the body in response to heat and pressure, evenly distributing body weight.

​Indeed, when you lay on a memory foam mattress, it creates rapidly a personalized and balanced form around your body, supporting your weight evenly, eliminating motion disturbance and relieving pressure focused on your shoulders, hips, and feet. The result can be a unique and unprecedented sleeping experience. The mattress reverts to its original shape once the pressure is gone.    

​Another advantage of memory foam mattresses is being less aware of a bed partner's movements because there are no coiled springs. It is also claimed that these mattresses might be especially helpful for older people, because minimizing extra movement could reduce the number of times they wake up during the night. 

On the negative side, memory foam can produce an odd smell when first used. To minimize this problem, it is recommended airing out the mattress for at least 24 hours before putting sheets on it. This should dissipate any smell.

Finally, note that memory foam mattresses and similar soft materials should not be used in infants' beds, as soft bedding traps can increase the risk of sudden infant death syndrome (SIDS).

Memory foam mattresses are usually made of viscoelastic foam and consist mostly of either a 2-layer or 3-layer design:
  • The 3-layer design is composed of a top memory foam, a middle comfort foam, and a high-density base support foam.
  • The 2-layer design is composed of a top memory foam layer and a high-density base support foam.
  • Usually, there is also a knitted cover.  

The top memory foam layer molds to the body shape when it comes into contact with body heat. This helps to support your body along the curves and natural lines of the body, reducing downward pressure and stress on joints.   
The middle comfort layer relieves further pressure from joints and different body parts.
The base layer is made of high density foam so it can support all the weight that's above it.

The following pictures show the two 2-layer and 3-layer designs:

2 Layer Memory Foam Mattress
Photo Credits: Zinus
3 Layer Memory Foam Mattress
Photo Credits: Zinus

This article will compare the Zinus Ultima Comfort and Signature Sleep Memoir memory foam mattresses. These were not just the most popular among Amazon customers at the time this article was written, but they had also received excellent reviews from most Amazon buyers (average rating of 4.5 out of 5 stars for each of the two brands!).

If you are in a hurry and wish to see right away Amazon price information for the various thicknesses and sizes of these two memory foam matresses, please click below:
Selected Memory Foam Mattresses on Amazon




Comparing the  Selected Memory Foam  Mattresses
Zinus Ultima Comfort and  Signature Sleep Memoir

The following table provides a feature comparison for the two memory foam mattresses selected. These memory mattresses are offered in four different thickness sizes (6", 8", 10" and 12"). The table below provides the features list that corresponds to each mattress thickness and for each of the two brands (please read the table notes that follow for further clarifications):
​
Memory Foam Mattresses Comparison Table
Table Notes 1 - 5 Explained:

Note 1:
Here are the type of foam layers that you get on the Zinus Ultima Comfort memory foam mattresses:
  • 6-inch mattress: 1.5" memory foam and 4.5" high density base support foam.
  • 8-inch mattress: 2" memory foam, 2" comfort foam, and 4" high density base support foam.
  • 10-inch mattress: 3"  memory foam, 2"  comfort foam, and 5" high density base support foam.
  • 12-inch mattress: 3"  memory foam, 3"  comfort foam, and 6" high density base support
​
​Here are the type of layers that you get on the Signature Sleep Memoir memory foam mattresses:
  • 6-inch mattress: 1.5"  memory foam and 4.5"  high density base support foam.
  • 8-inch mattress: 2"  memory foam and 6"  high density base support foam.
  • 10-inch mattress: 2.5"  memory foam and 7.5"  high density base support foam.
  • 12-inch mattress: 4"  memory foam and 8"  high density base support.

Note 2:
​Here are the measurements that correspond to the available mattress sizes:
  • Twin: 39" x 75" .
  • Twin XL: 39"  x 80" .
  • Full (Double): 54"  x 75" .
  • Queen: 60"  x 80" .
  • King: 76"  x 79"  .
  • California King: 72"  x 84"  .

Note 3:
CertiPUR-US® is a not-for-profit certification program for foam used in bedding products and upholstered furniture. When you see the CertiPUR-US® seal, you can be confident that the flexible polyurethane foam inside meets CertiPUR-US®   standards for content, emissions, and durability, and has been analyzed by independent, accredited testing laboratories. CertiPUR-US® approved foams are,
  • made without ozone depleters.
  • made without flame retardants.
  • made without mercury, lead and other heavy metals.
  • made without formaldehyde.
 
Note 4:

Zinus infuses its memory foam products with natural plant oils to maintain product freshness.
​
Note 5:
For exact prices, please refer to the Amazon products section below and click the provided product links.  Note that the Amazon price often includes a generous discount to the list price. If a discount exists, both the Amazon price and the list price will be displayed when you click the Amazon product link images below.

So which of the two memory foam mattresses to buy?

Here we have two extremely popular memory foam mattress brands that offer you a variety of mattress thicknesses and mattress sizes.
As mentioned, most Amazon customers have been very happy with these mattresses and, at the time of this writing,  had given them an average rating of 4.5 stars (out of 5 stars)! Therefore, you will probably be happy with either brand.

There is, however, a couple of differences you might want to consider before you make up your mind:
  • Zinus Ultima Comfort also offers mattresses with three foam layers, while Signature Sleep mattresses have two foam layers. The third foam layer which is in the middle may provide extra comfort.
  • Zinus Ultima Comfort comes with a 10-Year warranty as opposed to the 1-Year warranty that comes with the Signature Sleep brand.
  • Zinus Ultima Comfort mattresses are infused with natural plant oils to maintain product freshness.

If these points are important to you, you might want to consider a Zinus Ultima Comfort mattress. Otherwise, there is a good chance you'll be just as happy with both brands.

You will find below Amazon product links to view or purchase all the Zinus Ultima Comfort and Signature Sleep foam mattresses available for the various mattress thicknesses and mattress sizes listed in the above comparison table.

 


​Zinus Ultima Comfort & Signature Sleep "Memoir"  Memory Foam Mattresses on Amazon
​

1.  Zinus Ultima Comfort Memory Foam Mattresses on Amazon

You will find below Amazon product link images that will give you a choice of Zinus foam mattresses corresponding to all combinations of mattress thicknesses (6, 8, 10 or 12 inches) and mattress sizes (Twin, Full, Queen, King, etc.). 
Please click the Amazon US link image below for the mattress of your choice to see exact price information or to purchase.
Note: Amazon often provides a good discount on the List Price of sold products. If such is the case, the List Price and the actual Amazon price will be shown when you click the images below.

Zinus Ultima
6" thick - TWIN


Zinus Ultima
6" thick - FULL


Zinus Ultima
6" thick - QUEEN


Zinus Ultima
8" thick - TWIN


Zinus Ultima
8" thick - FULL


Zinus Ultima
8" thick - QUEEN


Zinus Ultima
8" thick - KING


Zinus Ultima
10" thick - TWIN


Zinus Ultima
10" thick - FULL


Zinus Ultima
10" thick - QUEEN


Zinus Ultima
10" thick - KING


Zinus Ultima
12" thick
TWIN


Zinus Ultima
12" thick
FULL


Zinus Ultima
12" thick
QUEEN


Zinus Ultima
12" thick
KING


Zinus Ultima
12" thick -
California KING


2. Signature Sleep "Memoir" Memory Foam Mattresses on Amazon

You will find below an Amazon product link that will give you access to Signature Sleep mattresses corresponding to all combinations of mattress thicknesses (6, 8, 10 or 12 inches) and mattress sizes (Twin, Twin XL, Full, Queen and King).
Please click the Amazon US link image below for the mattress of your choice to see exact price information or to purchase.
Note: Amazon often provides a good discount on the List Price of sold products. If such is the case, the List Price and the actual Amazon price will be shown when you click the images below.
​

Signature Sleep
6" thick - TWIN


Signature Sleep
6" thick - TWIN XL


Signature Sleep
6" thick - FULL


Signature Sleep
6" thick - QUEEN


Signature Sleep
8" thick
TWIN


Signature Sleep
8" thick
TWIN XL


Signature Sleep
8" thick
FULL


Signature Sleep
8" thick
QUEEN


Signature Sleep
8" thick
KING


Signature Sleep
10" thick - TWIN


Signature Sleep
10" thick - FULL


Signature Sleep
10" thick - QUEEN


Signature Sleep
10" thick - KING


Signature Sleep
12" thick - TWIN


Signature Sleep
12" thick - FULL


Signature Sleep
12" thick - QUEEN


Signature Sleep
12" thick - KING


Do you also need a Platform Bed for your foam  mattress?

If you also need a platform bed for your mattress, please click the following link which will give you access to all the platform beds available on Amazon:

ALL PLATFORM BEDS ON AMAZON


Have you not found what you were looking for?
Global Amazon Search

If you have not found what you are looking for among the above offerings, you can still search for it or for ANY OTHER PRODUCT you may need by clicking below and searching for what you need on Amazon.com:



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