The Science of Sleep "Allergy Free" product is manufactured with an "Always Fresh" anti-bacterial, anti-fungal cover and a non-allergenic mildew proof convoluted polyurethane foam cover.

The Always Fresh Protective Product is treated to guard against bacteria, mold, mildew, and fungal growth which is a natural breeding fround for allergy causing dust mites.  The anti-microbial treatment keeps the brotective cover "Always Fresh" as it self deodorizes.