There are three mechanisms by which thermal energy is transported.
 1.  Convection      2.  Conduction      3.   Radiation

In these three mechanisms the Convection & Conduction are fundamental of PC cooling application.

Here are a good example:
traditional air-cooled CPU cooler - a combination of a passive component - heatsink & another active component - fan.

Passively, a heatsink conducts the heat which generated by the operating CPU via the connection between the CPU die & the heatsink's bottom.

Actively, a fan continues to convect air for dissipating the heat which conducted out by heatsink.

There, for CPU cooler: the bigger throughput of heatsink the more effective work of fan.

However, is this classic combination would work on notebook cooling as well? Oh, yes, for the manufacturers of notebook, choicelessly,  the same concept has been adopted inside of the compact structure of notebook.

How about for Jetart? It's surely  improvable. If let's think differently.

Because of Jetart knows that the compact structure of notebook gives not pretty much room for the cooler to convect.

Inevitably, after a couple of hours' use, notebook  turns hot and the heat would be stocked. The stocked  heat would cause some damage to the pricey system in a course of time.

In the view of this, Jetart designed Xcool notebook cooler to "create spaces"  for the air convection.
This alternative concept makes Xcool different from the others. 
  
Now look closer to the new Xcool you would find:
The two lower supports create the space for cool air take in and  the four upper rubber pads create space for hot air take out.

Since Xcool is made for creating space, Jetart must do the best to reduce the contact between Xcool & notebook. Accordingly, it would pointless for us to make Xcool by any hi-conductivity metal. Xcool doesn't work as a passive component as heatsink.

*See, most of the notebooks are shelled by non-metal material (non-conductor). In that case,  how could we ever expect a the connection between notebook & notebook would conduct the heat effectively??

Among those notebook coolers Xcool thinks differently and perform outstandingly. 

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