Mattress Cover With A Zipper For Allergies By Allerease, Twin. Product Details From the #1 best selling allergy bedding brand, AllerEase Waterproof delivers the clean, healthy night's sleep that we all deserve. Featuring premium materials and an expertly-designed construction, Waterproof prevents dust, pollen, and pet dander from collecting in your mattress. With a soft waterproof layer to protect from spills and stains, Waterproof also features machine washability and a lifetime warranty to offer unmatched quality, convenience, and value for you and your family. 100% Polyester Imported ADVANCED ALLERGY PROTECTION: AllerEase mattress protectors have tightly woven, expertly-designed fabric to prevent 99.9% of unhealthy household particles from collecting in your mattress. WATERPROOF DESIGN: This mattress protector features a waterproof design that prevents liquids from contaminating and ruining your mattress, making it kid and pet proof! EXTENDS MATTRESS LIFE: Fully encasing your mattress with a durable and comfortable allergy mattress topper extends the life of your mattress by keeping it fresh and clean. A PERFECT FIT: Our exclusive FlexFit technology provide a perfectly snug fit with a soft, quiet cover that can help you sleep comfortably through the night. ALLERGIST RECOMMENDED: All AllerEase products provide clean allergy relief, are machine washable, and have a Lifetime limited warranty. 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.