They did say they are using bendable PVC to avoid rubber deterioration.
But from the photo, it looks like 2 arms he is holding are same sculpt. Maybe left one is original sculpt and right one is bendable PVC cast for muscle bending test?
But from the photo, it looks like 2 arms he is holding are same sculpt. Maybe left one is original sculpt and right one is bendable PVC cast for muscle bending test?