This is a model 2000 welders cap, it is REVERSIBLE with Skull on one side and solid one the other. Actual cap may vary. Extra Large. 7 5/8….23.625 to 24″ 60. 7 1/2….23.25 to 23.625″ 59.0625. 7 3/8….22.875 to 23.25″ 58.125.