Fully protect your mattress investment by using Protect-A-Bed Buglock Economy Encasement. Patented (US Patent 7,552,489) BugLock three-sided zipper and AllerZip Secure Seal gives you total protection against dust mites, allergens and bed bugs. Our Economy mattress encasement is completely Bed Bug entry, escape and bite proof. The top surface is waterproof and stainproof, featuring our innovative Miracle Membrane with the Total Heat Transference Formula. Liquids and stains stay out, yet the state-of-the-art mattress encasement remains breathable and comfortable.