I bought a used, large Z1 helmet that fits perfectly with the XL padding thats already in it. However, the extra material that covers the neck is not padded, only soft fleece. I was in the tunnel flying the helmet for the first time the other night and its fits a little looser, so that after a while it move a little from the air getting inside, even though I up to strings on the neck covering. I believe that the padding in the neck covering would fix the problem, as I have worn friends Z1s who have the padding. Does anyone know how i can get the next covering padded?