I honestly don't know what it is made of. It is still in the pack and the pack doesn't say. It looks like a heavy made plastic maybe but I am not sure. There is a slot on the bottom for cans. It is for bottles or cans. It's marked 1998 and I have had it many years. The opener part only is 2" X 2" that's measured without the key chain part. I hope that helps and thank you for your interest.