Bed Guard Ultimate Hypoallergenic Bed Bug Proof Zippered Waterproof Pillow Protector ( Standard Size Each) 100% Cotton Made in US Dust mites, mold, pet dander, urine are all unable to penetrate the unique barrier in our bed guard ultimate protector 100% waterproof membrane barrier 100% cotton material surface is soft and quiet yet inner barrier allows air to flow freely while maintaining waterproof layer. Made in the USA Zippered for added bed bug proof barrier.