This hand knitted green hat is 80% wool, 13% acrylic, and 7% viscose. The wool in the hat does not make it stratchy, it is soft, and stretchy to fit most heads. It is a lightweight hat, just right for North Carolina's moderate winters. Alternating green hues and stitches show this is a special hand knit hat. It will cover your ears with its rolled brim and the star on top is to keep your warmth from escaping. The yarn label states it is machine washable, but it is best to hand wash in luke warm water.