DynastyMattress (DM) is a brand which has been around at least since mid 2011, as evidenced by a promotional video uploaded to YouTube on July 17, 2011 and a review ten days earlier of three DM models (10 Inch Deluxe, 12 Inch Therapeudic / Luxury, 15 Inch Grand) by Orthopedic Mattress, a site devoted to information and reviews on memory foam mattresses, mattress pads or toppers.

The DynastyMattress site is extremely simple, apparently low-cost. But their mattresses are among the top dozen selling brands and the ninth rated brand of memory foam mattresses on Amazon (it would be 11th, but one higher-rated brand is really latex, and another is foam but not memory foam). They are generally low-cost mattresses, but are made in the USA. DM cites its years of experience in marketing bedding products, but they do not indicate how far back this goes. DM states that its mattresses are comparable to equivalent Tempur-Pedic models.

The DM website lists their mattresses by Categories. All but one category list individual models on the Categories page beneath the category name (that category is the 11-Inch Hybrid CoolBreeze Gel Memory Foam Mattress, the only DynastyMattress category to have springs). The models are really different sizes of the categories. This differs from the practice of most mattress manufacturers, who list sizes as part of a model listing.

Many of the Categories are mattresses sold with adjustable beds by Leggett & Platt and Reverie.

Almost all of the individual mattress review sites (such as Ted & Stacey’s Mattress Guides & Reviews) are favorable, especially of the 12″ CoolBreeze GEL Mattress and the 12″ Luxury Therapeutic Mattress. This contrasts with consumer reviews on Amazon. There, average customer reviews for DM mattresses (mattress alone without adjustable bed or foundation) top out at 4.6 of 5 stars, with most at 4.1 to 4.3, and some as low as 3.6 (the two named above are 4.3 and 4.4).

Most DynastyMattress models are firmer than average memory foam mattresses. Reviewers tend to see them as also cooler. When the density of the top foam layer is cited, in most cases (for instance the 10″ CoolBreeze GEL Mattress) it is 4 lbs. Some of the highest models (such as the 15″ Luxury GRAND Mattress) have 5-lb. memory foam at the top, but with more foam beneath. The 4-lb. foam is less temperature sensitive and more pressure sensitive. Therefore, it is naturally cooler than 5-lb. memory foam, but initially more yielding. But firmness in memory foam is relative to both weight and heat, so for a person with more body heat, the 5-lb. foam would seem softer.

12-Inch CoolBreeze GEL Mattress        15.5-Inch Cool GEL Mattress       10-Inch CoolBreeze Gel Mattress

There are two factors to the apparent coolness of DynastyMattress products relative to other memory foam mattresses. One is the infusion of gel beads into the memory foam of most models. The other is DM’s CoolBreeze AirFlow System. Gel does provide initial cooling if the mattress has sat unused for several hours. It can absorb heat for some time. How much and for how long depends on the type of infusion and the type of gel. It also depends on heat absorbed by the gel being transferred to where it can dissipate.

Memory Foam          CoolBreeze Gel

Most memory foam now has an open-cell structure, which does let air filter through the foam. Some memory foams, such as those using Selectabed’s Airflow Transfer System, have vertical pores, which allow several times more air to flow through, as can be seen in this video.

Part of the DynastyMattress CoolBreeze AirFlow System is its Cool AirFlow Foam, which is convoluted on the top surface. This permits air to flow horizontally to the border of the mattress. The downside of this is that as deeply as the convolutions are cut into the foam, they partly compromise support and stability.

In the Airflow Transfer System (ATF), the top surface of the lower foam layer has numerous smaller channels cut into the surface, They are not as deep, leaving the support foam more supportive. They do not need to be as deep, because the foam(s) above are vertically ventilated, allowing air to pass more freely in that direction. This could be one reason the Snuggle-Pedic Mattress has a higher average customer rating (4.9) than any DynastyMattress model.

11-Inch Hybrid cutaway    Wrapped Pocket Coils

In the 11-Inch Hybrid CoolBreeze Gel Memory Foam Mattress, the springs are wrapped pocket coils, selected for their conformity. Whereas the other DM categories are compared to Tempur-Pedic mattresses, the 11-Inch Hybrid is held up against Beautyrest Black models. Another reason for pocket coils is that they can be compressed and rolled, unlike most innerspring types.

DynastyMattress now compresses, seals, rolls and boxes their mattresses to be shipped out by FedEx. Those sold on Amazon are fulfilled by Amazon. Shipping is free within the 48 contiguous states, For ones sold on Amazon Canada, there is free shipping in Canada.

The warranty on DynastyMattress’s memory foam mattresses is for 20 years, but for the hybrid it is 30 years. The sleep trial is 120 nights, which begins the day of delivery.