The face is unmistakeably Arnold. The powerful chin, thick neck and bushy eyebrows. This mask is so realistic, you are virtually guaranteed the best costume award at the Halloween Party you are going to. Now, if only you can act like Arnold, the illusion would be complete. Practice makes perfect. So, get the mask, stand in front of the mirror and repeat: "I am Detective John Kimball. I am going to ask you a few questions and I want them answered immediately!". Or, scream out: "Get to the choppah!!!" or "Get dowwwwn!!". Practice it until you sound exactly like Arnold :)
One size fits all. Realistic movie quality latex material. Pull Over.