i bought a revo helmet like a month ago, but now i have a serious problem. Every time i hit the chinstrap slides to my neck and the helmet slides till it hits my nose.
I've already inflated my helmet to the max but it keeps falling.
is there a way i can solve this? or does anybody know what can I do?

-thanks.

the problem is that you have the wrong size chinstrap, there are 2 different kinds of them, one for a helmet with the buckles on the top, and one for the buckles on the bottom. You probably just bought the wrong kind, i did it before and it is horrible, it chokes you and there is no protection!! ask your coach for a different one and make sure that is the right one

Your helmet is too big. I had to get several different sizes b4 i found the right one.