From the pattern:
Denim is one of my favorite fabrics, and this denim yarn is wonderful to knit with. It gives a clean, crisp look to the stitches. The turned-up brim with a flower is a style of hat that has been around forever, but the oversized felted flower gives it a new twist. The matching mother’s pin can be worn on a favorite jean jacket or pinned on a felted bag, handbag, or diaper bag. The flower pin makes a great gift too.“

Link to video tutorial for flower:
http://susanbanderson.blogspot.com/2007/09/felted-flower-...