There was no product description on these masks, but I assumed they were plastic (the puppy ate the plastic mask that came with the new (expensive)Iron Man Costume. I did not want my husband to freak out so I tried to replace the mask with this order. What came was 8 flimsy, thin, small cardboard masks. I have no use for them, and would have just returned them, but the cost of return shipping was as much as the masks themselves. FYI: this order is not 4 plastic masks - you will receive 8 cardboard masks.