Fireproof hats are garments that protect the wearer's head from fire. These hats are used in dragoncare.
Behind the scenes
The existence of these garments is only shown on a page of notes concerning the book Dragon Breeding for Pleasure and Profit that is available on J.K. Rowling's Official Site. The scan of the page is available here.
- J.K. Rowling's Official Site (Mentioned only)