Please do.
Try and get a detailed answer and maybe see some reciepts of purchase if possible. I hear things like "It's ABS" as though it's fact, when in reality it's only hear say. While it is most likely ABS for the armour and HDPE for the helmets, there are some plastics with virtually the same properties as these two that they could be mistaken for quite easily, even if you have experience with them they are hard to tell unless you form them.
Latex thighs.....(screen grabs courtesy of TKDUEUNO)