A Natural Seal Is Formed Around Your Mattress To Protect It From Dust, Pet Product Details COMPLETE PROTECTION| This is not a fitted sheet style cover. This covers zips closed on all 6 sides protects your RV and camper mattress from Dust, Pet Dander, Pollen, Liquids or whatever nature sends your way QUIET COOL| Unlike vinyl or plastic backed products, the Allersoft's soft poly knit fabric maintains a cool temperature and will not rustle under the sheets LOCKING ZIPPER| Patented secure locking zipper which seals off the Sofa bed mattress from anything outside. Zipper has auto lock tab and Velcro seal over the zipper when closed ALLERGY RELIEF| The special barrier in this fabric shields you from irritating allergens that can sneak into the deep layers of your mattress. Sleeping on an unprotected mattress exposes you to all different types of allergens ALL 6 SIDES WATERPROOF| Protects the RV mattress from spills and liquids while most fitted style or 5 sided covers do not protect the sides and bottom EASY MACHINE WASH| Simply throw in the machine on hot and tumble dry PREMIUM WARRANTY| Lifetime warranty on all workmanship FLEXIBLE STRETCH SIDES| Fabric has spandex stretch sides so will fit properly and snug with all depths 9-13" Asthma Allergy friendly Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.