From knots of love website: Feel free to use these patterns for charity. If you are using these, or any Knots of Love patterns for any other purpose, a donation to Knots of Love would be greatly appreciated! Thank you!

Knots of Love patterns are the property of Knots of Love, Inc. If you would like to use our patterns for any other purpose other than making caps and donating them to Knots of Love, please kindly make a donation by sending it to Knots of Love, Inc. 2973 Harbor Blvd., #822 Costa Mesa, CA 92626

There is an approved yarn list on the pattern page if making this hat for aknots of Love.