Figure Armatures (Individual)-TruFormTruForm Armatures are made of urethane foam and a durable plastic. The head and ribcage can be altered by using a round file, if necessary, during the gestural phase. The pelvis and extremities are made of a durable plastic on the 18" and 24" models and a very rigid urethane foam on the 36" model. One of the key elements of the TruForm Armature is the aluminum wire inserts in the joints and all parts can be removed or replaced. The TruForm Armature