I bought this for the Pretty Jason Voorhees Halloween costume. I didn't crease the hem as you can see in the photo because I just wanted to take it off without fiddling with my hair. It worked great for this and the price was great. Mask made of thin, semi-flexible plastic. It doesn't have much structure. Like any plastic, it heats up when you breathe so close to it. This rating is based on suitability as Jason's mask. This is NOT intended for sports.