It is a very soft and pliable plastic that does not appear to easily develop cracks. We had an engine failure at about 20 feet up on its first flight. Smashed into the ground nose and wing first. I know we were lucky, but no damage to the plane at all. We made around 15 flights the first day out on floats without a hitch. Expect this bird to still be flying long after I am bored with it.