Felton's Robin Agar-Celli ships every hat herself, paying out of her own pocket. But it's the thousands of worldwide volunteers who fuel her dream.

If you buy something through my links, I may earn a commission. Crochet always makes me think of easy breezy beach vib ...

On days when she is not volunteering, Jan Powell, 74, of Kansas City, can be found nestled in her cozy living room with skeins of yellow, red and white yarn.

Daryl Nicholls, 30, told Newsweek she was "pleasantly surprised" when the hat fit her newborn son, not realizing what that meant for his health.