Night Guard Pillow Protectors (Set of 2) - Waterproof, Bed Bug Proof, Hypoallergenic - Premium Zippered Cotton Terry Covers - 130gsm (Standard) RELAXED SLEEP  Designed with a breathable polyester knit fabric, your pillow will stay cooler and more comfortable throughout the night. REDUCES ALLERGENS  The Night Guard pillow case helps reduce allergens and repel dust mites to help relieve asthma symptoms and respiratory conditions. PROTECTS PILLOWS  Boasting a waterproof barrier, the Night Guard pillow protector lets heat out, but protects pillows from sweat, saliva, and stains! SLIPS ON EASILY  The added protection of our pillow cover wont impact your sleep. In fact, the zip is on the side for easy pillow access for cleaning and use. EXTENDED WARRANTY: Night Guard products are designed using the highest quality materials and backed by superior customer support, which is why every order of our comforter is backed by a premium warranty.