The plastic that this is made of is semi translucent, thick, and fairly flexible, making this possibly the most durable one I own, albeit not quite the nicest looking. The strap gets additional points for being wider, thicker and secured to the mask better.
My only real gripe with it is that it's so simplistically painted. The mask itself is bare plastic with the eyebrows, mustache and beard just painted on. I suppose with a bit of paint, this could be one of the higher quality Guy Fawkes masks out there.