Features: COTTON RICH SOFT TOP: Made with a superior cotton rich terry cloth top to create soft, breathable, and comfortable protection. 100% WATERPROOF: Microscopic pores in the 100% Waterproof membrane backing repel urine, perspiration, and all other liquids to keep your pillow safe from stains. HYPOALLERGENIC ALLERGEN PROTECTION: Ultra-thin hypoallergenic fabric guards against dust mites, bacteria, and other allergens. EASY CARE: Easy to sleep in, easy to care for! Machine wash and tumble dry low, no ironing required. Dimensions & Contents: Standard Size: Includes 4 Pillow Protectors 20" X 26" King Size: Includes 4 Pillow Protectors 20" X 36"