Protect-A-Bed box spring encasement offers the protection that a typical box spring cover cannot. Our bed bug entry and escape proof box spring encasements provide an impenetrable barrier that protects you and your box spring from infestation. Instead of settling for an average box spring cover that doesn't offer the protection you need, choose Protect-A-Bed® box spring encasements for superior defense against bed bugs. The Protect-A-Bed® box spring cover is designed to provide ultimate protection against allergens and bed bugs when combined with an AllerZip® mattress cover. All our box spring encasements feature the Patented BugLock® (US Patent 7,552,489); a three-sided zipper system with Secure Seal® for complete protection against bed bugs. In fact, AllerZip® mattress covers are bed bug entry and escape proof.