Precision testing has been conducted by independent laboratories to the International Standard ASTM F316-86. Their conclusions were that ALL Zip & Block™ products provide exceptional protection and clinical effectiveness against dust mite allergens.

The pore size of the fabric used in producing Zip & Block™'s complete line of anti-allergy bedding is well below the industry's maximum allowable pore size of 10 microns, thereby ensuring an effective barrier against dust mites.