Great mask made of a nice high gauge pvc. But because it's pvc it does run the risk of cracking if too much force is applied like a police baton hitting it for some reason. However in regards to the one size fits most if you do have a small head you can stitch the elastic strap tighter. A small inconvenience yes but a small price to pay for a great mask. So whether you're buying this to go to protests and start riots or listen to the 1812 overture set to organized "firework" displays a must buy if you are even contemplating buying it.