Both English and Japanese versions are fully charted using standard knitting and/or crochet symbols. Japanese version available here.

Body of hat is knit in the round, but brim is crocheted flat.

Calls for Japanese size 4 knitting needles (3.3mm) and size 3/0 crochet hook (for the brim).

NOTE:
This same pattern appears again on the Pierrot website with a different name and pattern photo. It is called 28-33 on the pattern website and No.33 in the pattern PDF. The patterns are identical, however.