I'm going to be purchasing some fabric allergy mattress/pillow covers to help cut down on dust mites.

Of the 2 that I'm looking at one has a pore size of 2.8 microns (this is made for dust and pet dander) and the other has a pore size of 6 microns.

Would the 2.8 micron fabric less breathable (thus hotter sleeping) than the 6 micron fabric?

Thanks.

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