JT Eaton Lock-Up Premium Mattress Encasements are made of durable stretch knit woven fabric with waterproof linings and terry cloth tops. The waterproof mattress protector has a zipper locking system that prevents bedbugs from getting into the mattress and "locks-up" current infestations. with an expandable zipper for pillow top mattresses, these bed bug mattress encasements are able to reduce heat build-up and sweating for breathability.

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