i was in the garage packing for a morning ski trip when my 13 year old son and I put on our brand new, just out of the box helmets and jokingly hit each other in the head. Not hard, just father son funn'n around. We both looked at each other at the same time and said "ouch, this helmet freaking hurts.." After a bit more testing and several other family members acting as test subjects we decided to send them back before even a single use. I just couldn't imagine that it would save our brains from injury in the event of a good hit to the snow/ice. Btw we had our old helmets involved in the tests as well for comparison and the foam in these helmets was just flat out hard. hope this is helpful.