The mask is one-size-fits-all. The mask width is about 6 1/2 inches, measured from cheek bone to cheek bone. The total height is approximately 15 inches. The total weight with the strap is approximately 10 ounces. The mask material is urethane resin.
The mask includes a leather strap that can be adjusted for practically any head size.
The mask has been hand painted on the front and back using high-quality acrylic paints, and it has been sealed with a clear coat to protect the paint finish.
Project Write-up
You can see how I constructed the mask in this blog post:
https://www.modulusprops.com/blog/project-writeup-bioshock-bunny-splicer-mask