Ease your mind and protect your box spring with this laboratory tested 100-percent Ultimate Guardian Bed Bug Proof Mattress Protector. Made with a size 5 zipper, it provides the maximum protection in order to keep bugs from penetrating your box spring. This bed mattress protector is also dust mite proof so you don't have to worry about any of these vermin taking over your bed. The product is machine washable and has a 105 GSM stretch knitting fabric. It is available in twin, full and queen so it can fit various mattress sizes.