This is a Nylon 3d-print. I made the model for my own head. It was printed in 3 parts. The head weighs 140g (including the lower jaw).
It took about 9 hours to print (layer height 0,30 mm). I used the Makerbot ABS preset - just changed the temperature of the extruder to 245°C.
This model is really durable - I can compress it to half the size and it goes back to the original form. Cannot be crushed or ripped apart.

See how flexible it is: https://www.youtube.com/watch?v=zaKjE-vxpkY#t=7m44s

I made the model and updoaded it on Thingiverse: http://www.thingiverse.com/thing:650760