Originally Posted by
wphamilton
If it's not clearly similar to cycling protective gear, difficulties could arise at facilities where helmets are required such as military installations and some corporate campuses, in the sporadic jurisdictions that do require helmets (admittedly not a big issue for me), in parks and paths that require helmets, in group rides and organized events, and on those random occasions where you encounter someone who is ignorant of the facts and probabilities but who wants to make a point about cycling headgear.
So one purpose is to dissuade excessive authoritative scrutiny where helmets are required? Hmmm, you could simply "open up" a cheap helmet with a dremel and saw. Remove some of the structure to allow more venting (a lot more venting), but to still maintain the general shape of the helmet. The suggested idea of looking at "large children" helmets would serve well in this. They tend to be lower profile and fit the crown of the head deeper into the space provided. I was looking around for low profile helmets and while they exist, they tend to be expensive "racing" affairs.