Beret and mask is an item obtained by talking to Patchy on Mos Le'Harmless with a Black beret and a Mime mask in the inventory. Patchy will charge 500 coins to assemble these 2 items together. Players may have it disassembled for 600 coins.
Currently, this hat suffers from the glitch in which the player appears to have short hair or is bald, even if they have long hair (e.g. a female character with long hair appears to have short hair when they wear the hat). Taking the hat off returns the hair to normal (many other hats suffer from this, including the Infinity hat).