Why is Sunbrella fabric better than any other fabric for outdoor furniture cushions?

Sunbrella is a 100% acrylic fabric where most outdoor applications prefer. Besides its well known fame for durability, Sunbrella fabrics are also widely available. They come in different grades for different applications. Also there are many other brands of acrylic fabric out there. If you go to a local fabric shop they will easily assist you to other brands and cheaper acrylic fabric.