I was thinking about the helmet i was going to buy and I don't know whats inside. I don't want to be uncomfurtable at conventions. I was thinking I'd buy a millitary helmet pad. I know a site that sells them for cheap. I'd appreciate your ideas.
I use a mix between high density chair foam from walmart and felt. Use the felt on the areas where you face rubs and the padding on the top and wherever the helmet is loose. cheap and works like a glove.
I use a liner from one of my helicopter helmets. It doesn't fill out the whole lid so I velcroed in some pads from a MICH helmet. Very comfortable. I also mole skinned the inside of the cheeks to prevent the fiberglass rub.