This is a recreation of the Ivar the boneless helm from the TV series Vikings. The helm is made of 6-7oz veg tan leather. The pieces were tooled and then stitched and riveted together. This is not a battle ready helm it is just for show/cosplay. It has foam on the inside for a snug fit and comfortable wear. It fits up to a 24” head, you can remove the foam to fit bigger.