not much but mostly they dont tend to break on people, hmmmm....
i agree with what the others are saying about this product, but when i always shot them off they almost always bounce off of people, unless u hit them in a solid spot (like the mask), my friend snuck up on me while we were playing and shot me in the leg with about the same type of gun from about 5 feet away, he was using the same paintballs i was using (hotspot) and it bounced off me. i was only wearing jens and it was almost a direct hit. it left a BLOODY mark and it left me limping for the rest of the day pretty much.
If u want to turture your friends with pain and not get them out often then these will work for you!