There are many fabrics to choose from. The fabric you choose mostly depends on personal preference. All of the covers that made our list have breathable material as a key component. Some of them are a polyester blend, others are 100 percent cotton, and a few are cotton and nylon or spandex blend. Each type of material will offer its own benefits and drawbacks. Cotton is very easy to care for and will come clean easily but could lose its shape over time. The polyester blend will be a bit thicker and shiny. It will wipe clean and may not be machine washable, check your instruction manual.