The Box Spring Bed Bug Encasement Protector completely seals away your box spring, preventing infestation by bed bugs and other pests. The SecureSleep encasement is scientist-tested, and is impervious to pests. If you know about bed bugs you realize that box springs are especially vulnerable. The Encasement Protector envelops the entire box spring, not just the top. Made with high quality, re-enforced material, it will not wear down, not even at the corners, where many inferior products tear.