DUG1009: There is no room for bed bugs with this anti bed bug box spring Protector! Entomologist tested effective, SecureSleep box spring Protector with our zipper technology and micro-zipper closure, is impermeable to stop the penetration of bed bugs in fabric. Features: -Available in Twin XL, Twin, Full, Queen, King or Cal King sizes. -100% micro polyester. -Long term solution. -Comfortable and breathable fabric. -Entomologist tested effective. -Laboratory certified. -Luxurious. -Durable. -Patent pending zipper technology. -Machine washable.