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Tobia Gemma Thermal Comfort Firm
Spaldin Sleep Systems
introduced the Gemma Thermal Comfort
line of Tobia Natural Sleep
in 2013. These mattresses feature Gemma
foam, a newly developed form of cell structure for cushioning foams.
has its own website, http://www.gemmasleep.com/en/
, where Spaldin
foam and Thermal Comfort
. The website's banner says, "GEMMA™ / sleep + science / TOBIA® Technology inside."
What is Gemma?
On the Gemma
is a video
showing what Gemma
foam is, how it is made and how it works. According to Spaldin
is "a revolutionary technology designed to expel the moisture and heat produced by our body while sleeping." This technology was developed by Industrias Tobia
, the parent company of Spaldin Sleep Systems
, described as "a high-tech European bedding manufacturer pioneer in the Natural Sleep concept that combines the use of Fully Certified human and ecologically safe materials with the maximization of Thermal Comfort and Ergonomics."
The key feature of Gemma
is its "gem-like" crystaline structure of open dodecahedrons (a dodecahedron
is a 12-faced 3-D figure with pentagonal faces). This lacey design allows not only air, but also moisture to pass through. This is to keep the top surface both cool and dry. With both air and moisture circulating, the moisture evaporates, further cooling the mattress.
This design was inspired by natural structures, such as honeycomb cells. According to the video, the foam is formed in two stages. In the second expanded into the open crystaline configuration, which is highly permeable.
What is Thermal Comfort?
explains Thermal Comfort
this way: "Thermal comfort is measured by the capability of a mattress to allow this natural heat dissipating mechanism to work and to stay dry."
They go on to explain the role of cooling, how the body sleeps better when the temperature is lowered, such as through perspiration. But this means is halted during the REM (Rapid Eye Movement) cycles, and sleep is interrupted if the sleeper becomes to warm.
page also describes four "Mechanisms of heat elimination" (  Radiation,  Conduction,  Convection, and  Evaporation) and how they operate when sleeping on a mattress.
So far Spaldin
has two Gemma
models: Gemma Thermal Comfort Firm
and Gemma Thermal Comfort Plush
. The difference between these two models is in density of the top layer of plush foam. This foam in the Gemma Firm
is 2 pounds, while that of the Gemma Plush
is 1.3 pounds. Otherwise, the descriptions of the two Gemma
models are the same.
The Tobia Gemma Thermal Comfort Firm Mattress
has a cover
of organic cotton
with fire-resistant Visil
Under the cover are two layers of comfort foam. The top layer is 2-lb. density soft cushioning foam
. The second layer is Spaldin
's 3.2-lb. Gemma memory foam
. Each of these foam has the Gemma
gem-like structure. This takes the place of reticulated foam for allowing moisture to flow through for rapid drying.
The support core of the Tobia Gemma Thermal Comfort Firm
is a layer of 2-lb. polyurethane foam
. This and the other foams used in Spaldin
mattresses contains uo to 60% plant-derived polyol oils, reducing dependency on petroleum products.
The Gemma Thermal Comfort
models are suitable with platform
beds and slatted (European-style) foundations
. They are also compatible with adjustable beds
. The Gemma
models are available through several retailers. They are covered by Spaldin Sleep Systems
' 20-year warranty.
Mattress and Bed Set Model Name
Tobia Gemma Thermal Comfort Firm
Spaldin Sleep Systems, Inc
Industrias Tobía, S.A., Calleja Vieja 62-62, 26006 Logroño, La Rioja, Espania (Spain); Gemma, Eden, NC, USA, 27289
Level of Firmness
Inner Bed Composition
PU 2-lb support core, 3.2-lb. memory foam comfort layer, 2-lb. soft foam layer
Mattress Edge Support
Provided by the support core
Mattress Cover Composition
Organic cotton ticking with FR Visil fibers
Total Mattress Height
Platform, slatted frame, or adjustable bed
''Gem-like'' foam structure
Depends on retailer
Keep in sanitary condition, and provide proper foundation
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