Kids Batman Mask

My boys want to be Batman for Halloween, I plan to sew the costumes but I wanted something semi-rigid to back the felt for the mask so it would hold its shape.

This is sized for a child's head and features, the temple to temple width is 100mm so it will be very easy to scale to the appropriate size. Since kids noses are smaller though, it may not cover an adults nose entirely you'll have to experiment.

I left the eyes uncut so they can be customized after printing and to prevent dealing