This fabric screams polyester but I did a burn test and it burns like a natural fiber. Go figure. Best guess is cotton. It is a medium weight fabric with a little bit of drape. It could be used for a dressor skirt. Or even a light jacket or trench coat if it was underlined with a cotton broadcloth or light canvas.It has a really cool basketweave texture which adds "depth" to the plaid pattern.I have four yards total so plenty of options for your project. Width is 44 inches.I will combine shipping for multiple yards.