SafeRest Premium Hypoallergenic Waterproof Certified Low Profile Bed Bug Proof Box Spring Encasement 5.5″ – Vinyl Free

Amazon.com Price: $24.95 (as of 18/10/2017 08:38 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