SafeRest Premium Waterproof Lab Certified Bed Bug Proof Zippered Box Spring Encasement – Designed For Complete Bed Bug, Dust Mite and Fluid Protection 9″

Amazon.com Price:  $24.95 (as of 18/10/2017 06:55 PST- Details)

Independently lab tested and certified bed bug entry, escape and bite proof
Surrounds the box spring on all 6 sides with a durable high-grade polyester surface material back coated with a water, bed bug and allergen proof membrane layer (great for those with asthma and allergies)
Exclusive Micro-Zipper technology prevents all stages of bed bugs from passing through the zippers teeth