Patterns
If you wish to make a hat yourself, here are patterns for your use (pdf format).
Simplicity , McCall’s, and Butterick all have patterns for fleece hats. Numbers change, so just check their websites or pattern books.

Chemotherapy Turban
Reprinted with permission of
The Creative Machine Newsletter
PO Box 2634-R
Menlo Park, CA 94026-2634
(650)366-4440, fax (650)366-44557
Turbans.pdf

Creative Kindness Easy Hat
Nancy’s Notions provides a number of free patterns as part of the Sewing for Charity program. One of the patterns is for this Easy Hat. You can download the pattern (pdf format) here.