The pattern is written for two sizes, small/medium and large.
The finished head circumference is 18” for the smaller size and 21.5” for the larger one. (Shown in picture)
I used Fair Isle technique with wraping floats which are over more than 3 sts in a row. Help with this technique you can find here.

Errata: For smaller size cast on 110 sts
Pattern set up rnd: M1, K22, pm 5(6) times. You
have 115(138) sts.
11/15/2008 I updated the ravelry download today with the corrected version.