Polyester MOISTURE PROOF – Rest peacefully knowing that moisture won’t be bugging you tonight! Our super fine zipper will keep water out completely. Our smooth, breathable, stretchy fabric will never tear or crack. Top-notch quality. 100% WATERPROOF on Top, Sides & Bottom – Our protectors seal out moisture, liquid, saliva, sweat and anything wet! A great idea for people with children or grandchildren who spend the night. HEALTHY – Protect yourself and your family against particles s, debris and . They Are 100% Safe for Your Kids. They’re also great to use at hotels when you travel! QUIET & RESTFUL NIGHTS –You won’t experience any crinkling, cracking, or annoying sounds like most waterproof pillow cases. Not only is our material ultra-plush and soft to the touch, it’s also quiet! You are going to love it! For a small investment, you can keep your pillows looking new for years to come! EASY WASH & CARE – Our soft pillow protectors can easily be machine washed and dried. Not only do they wash well, they hold up beautifully. You can wash just the pillowcase covers and not the pillows. Your complete satisfaction is our top priority. 100% Satisfaction Guaranteed. Guardmax Bulk Pillow Protectors with Zipper - 100% Waterproof, Soft and Noiseless Pillow Covers - Protects Pillows from Dirt, Dust and Dander