"Advanced Protection: National Allergy Duvet Covers are made from 100% breathable cotton, which promotes a sounder nights rest. Our covers feature an exclusive BugShield Zipper System, engineered to fully encase & protect your comforter. Recommended by Doctors. Size: 110"" x 96"" Zipper Protection: Keep your duvet clean and protected with the Two-Part Zippered System. The auto locking zipper ensures that it will stay closed. An added barrier creates a fabric shield under the zipper closure to doubly ensure there are no gaps. Breathable & Tight Weave: Our USA-designed, 100% cotton weave, is recommended by Doctors nationwide. Our fabric is woven so tightly that only air can get through. With a mean pore size of 2.6 microns, our breathable fabric keeps you cool, comfortable, and protected Noiseless comfort: National Allergy's Duvet Protector is made from 100% cotton. Our durable & quiet comforter encasement is soft to the touch and noiseless when moving around while asleep. This duvet cover is designed to provide an extra layer of quality protection. Easy Care: National Allergy's soft, durable, & 100% cotton zippered duvet encasements are fully machine washable, making them the perfect choice for everyone. Our doctor recommended duvet protectors are designed for everyday life, easy to clean & easy to use."