Intro from pattern pdf:

This fun hat features concentric circles in two colors, worked from the top-down to snug your head and keep it warm in cold weather. There are quite a few possibilities of variation to give your concentric hat that personal touch. Hubby does not like anything complicated - make it in neutral colors; have someone vibrant in mind for a gift - make it in equally vibrant colors to compliment their persona; use more than two colors for your kids; vary the width of the circles to get a completely different look. The idea is to have fun!