Fully protect your mattress investment by using Protect-A-Bed mattress protector. AllerZip mattress protectors give you complete mattress protection for a healthy, allergy-free sleep zone. Patented BugLock (US Patent 7,552,489); three-sided zipper and AllerZip seal gives you total protection against dust mites, allergens and bed bugs. AllerZip mattress encasement is completely Bed Bug entry, escape and bite proof. The AllerZip mattress protector provides your whole family with a clean and healthy sleeping environment. The smooth surface is waterproof and stain proof, featuring our innovative Miracle Membrane. Liquids and stains stay out, yet the state-of-the-art AllerZip mattress protector remains breathable and comfortable. AllerZip Smooth Waterproof Mattress Cover: Certified by an Entomology Laboratory to be completely bed bug proof Excellent protection against incontinence and bed wetting Barrier for allergens, dust mites, pet dander, pollen and mold Breathable and waterproof Machine washable and tumble dry ready Cool and comfortable for excellent sleep.