In its most basic form, microfiber is polyester woven extremely fine. Because microfiber doesn’t stain, they make great sheets for kids, if you’re eating in bed, and for those who sleep with their dog. It’s softer than polyester but less breathable than cotton making it good for cold weather. 

POLYESTER Polyester sheets are known for their durability and stain resistant qualities. These sheets are made from a synthetic fiber which is commonly found in many bedding products. They are also wrinkle resistant, but are not as soft and breathable as other fabric options. However, Polyester sheets tend to be exceptionally cheaper than traditional cotton sheets, making them a popular choice for many people.