Boyd Sleep Waterproof Mattress Encasement: Premium Zippered Bed Bug Protector, Full Full size mattress encasement is designed to protect and preserve the life of your mattress while maintaining comfort Features a unique Breathe-a-Barrier Fluid-Proof Technology that safeguards mattress from liquid stains while remaining breathable; Adding to the soft feel of your mattress Rest assured knowing that your mattress is safe and protected against bed bugs with the Bed Bug Banisher zipper tie lock with serial number, certified and lab tested by Rutgers University