Made from special mite-proof fabric imported from Germany, these protectors also have a dust flap for extra protection. (Note that these covers are not allergen proof. An item has to be almost airtight to make that claim.) All existing items should be thoroughly cleaned before installing these protectors, to eliminate any existing mites and other allergens.
There is no chemical finish on these protectors. The fabric is natural cotton that has been specially woven and mechanically finished to stay dust mite poof, even through many launderings.
Zipper: This special zipper is self locking. When the zipper fob is pulled, the lock releases and allows the zipper to be opened or closed. This eliminates having to lock the zipper, which is typical on most bed bug covers.