One size seems to fit a 19-22 inch head as the ribbing is quite adjustable.
This PDF is promised to be e-mailed to you withing 24 hours of payment. As I check my etsy several times a day you may get it sooner than 24 hours.
You will need Adobe to read this pattern it can be downloaded for free(www.adobe.com). If you wish a hard copy it can be mailed to you for an additional 2.00.
Please do not copy or redistribute this pattern. You can however make and sell as many hats as you wish.