Customers prefer Luxe Comfort 1500TC Pillowcases, Ultra Soft Double Brushed Microfiber over 1500TC Egyptian Cotton ( King Size/ White) Enviornmentally Friendly! Perfect for Allergy Sufferes! Always Hypoallergenic! King Size Pillowcase 20" x 40" (51cm x 102cm) Microfiber measures less than one denier and is finer than silk making your bedding super soft Less expensive then high thread count cotton sheets, Microfiber is a high thread count and soft luxury feel for less money! Microfiber breathes better than cotton and does not wrinkle or pill as cotton does. Vibrant colors are fade resistant to keep looking new longer.