EBayWE DO NOT SHIP TO P. O. BOXES. PLEASE PROVIDE A PHYSICAL MAILING ADDRESS. Item will be shipped free by USPS Priority Mail/UPS within 48 Lower States (NO SHIPPING for Alaska, Hawaii or Puerto Rico) Nothing can ruin a good night's sleep like the thought of bed bugs. With 's All-In-One Zip-Up Box Spring Protector, those worries are a thing of the past. The exclusive design not only helps block unwanted bugs but invisible problems as well. The triple seal closure is so secure that it helps block out microscopic dust mites and other allergens for sneeze-free sleep. Our Box Spring Protector features three microporous layers that are completely stained and water-resistant; so if the kids have an accident or you happen to spill your drink, your mattress is left untouched and protected. The non-bulky design means you won't even know it's there - or hear that it's there - in the case of so many other box spring covers. All In One reduced the size of our packaging to leave less of a carbon footprint, so expect it to arrive without normal branded packaging. Ultimate Protection: This total encasement system features a triple seal closure, heavy-duty seams, and an interior barrier flap to help keep you, your family, and your box spring completely protected from bed bugs, dust mites, and common allergens Technologically Advanced Design: This box spring protector features a three-layer system that helps block out unwanted bugs and allergens; the triple seal closure features hook-and-loop and zipper closures along with a protective inner flap Completely Waterproof: The outer layer is waterproof and stain-resistant, which makes it a great choice for children’s beds instead of using a plastic or vinyl cover Ideal Fabric: The fabric is made of 50% polypropylene/50% polyethylene with a 100% polyethylene lining with no plastic feel. It's quiet and doesn't make unwanted noise while you sleep in your bed. Great Fit: Our protector fits box springs up to 10" deep. It measures 38 x 74 inches and fits twin size box springs