My friend Mary and her sister Rachel have Cystic Fibrosis. I wanted to support them by wearing a shirt that says something about CF. I was looking to buy a shirt but they are so expensive. My sister Leah said that she could make them if I had a white shirt. I bought one and we worked on it for two days. It takes about 4 hours to dry. Then you can wash it after 72 hours inside out. I will post more about Leah later.