Kit includes one ball of Encore Colorspun, worsted yarn (25% wool, 75%acrylic), in a Fair Isle color combination of your choice" Southwest (red oranges), blue, aqua and a the BFF Country pattern for the hat. The yarn is machine washable and dryable, but I always suggest air drying because it is gentler.
One ball of yarn will generally make 2 hats when the size 8 needles are used.