Where can i get these plain masks?

http://www.youtube.com/results?search_query=hollywood%20undead%26amp;search=Search%26amp;sa=X%26amp;oi=spell%26amp;resnum=0%26amp;spell=1





like the ones at 2:00


or does anyone know what they are called?





or anyones cuz they look AWESOMEWhere can i get these plain masks?
Right now you can get them at Party City, Spirit Halloween Store and any other Halloween Store you run into...ot any theatre store or costume shop.