#4 Size Foam Head Armature

#4 heads are circumference of 12 inches (31 cm).  Suitable for sculpting a lifesize newborn baby, finished length approx. 20 inches.  Matching body armature would be Size #2 or 3

These foam armatures are made to shrink to about 1/3 original size during baking.  I suggest you use a minimum clay thickness of 3/8 inch to give enough strength to the finished sculpt.  It will be hollow when the armature shrinks.