Vinyl mattress covers versus fabric

[Guest guest]

National Allergy Supply for mattresses advertises only the fabric

barriers for mattresses and say they keep dust mites and other

allergens from getting to you 100%. If you want vinyl for mattress,

you need to buy two box spring encasings and use one for the mattress,

so I guess not a hit for mattresses. Question I have is I'm sure

fabric is more desireable for comfort than vinyl but even though the

tightly woven fabrics can keep 'bed pests' away from you,

would 'breathable' quality of them allow toxins to get to you,

ASSUMING their would be toxins associates with dust mites or other

microbes in mattress?

Thanks bb