A ball traveling at high speeds carries tremendous energy. For example if a softball hits your head at 100mph and comes to a stop in 2 milliseconds the power of that impact to your head is 96 KW or 128 horse power. This energy needs to be spread so it does not impact and damage a particular point on the face and the energy absorbed so it is not transferred to the skull and brain.
FaceOff has a very rigid chassis made from virtually unbreakable polycarbonate to spread the impact and high density closed cell foam to absorb the energy.
Take a close look at how rigid the carefully shaped chassis is, how it moves evenly backward on impact, and how the foam works to absorb the impact. Go play... No worries.