This style of hat has many names and many variations this one is more Goth/Punk /hiphop inspired fashion cap

One size but it does say 57 on the label not sure if it means 57cm

Decorated with  silver coloured skull and crossbones, studded strapping. and studs on the front 

On the left hand side is a silver coloured buckle

On the right hand side there are silver coloured studs

Adjustable inner string at the back for a customised fit

100% polyester inside with a black PU faux leather outer layer

DO NOT PUT in the washing machine.   Handwashing/Wipe Clean