I'm not sure where my Skid Lid is... it was well battered and abused. The original plastic sharks tooth tabs that held the flexible hose tubes for the strap broke years ago and were replaced by shoe laces (I was too inventive for my own good as a kid).
The helmet was probably reasonably good for road commuting. Anything hard one would hit would be impacted by one of the plastic bars over the top. Unfortunately my helmet had very thin padding. Mom's helmet was a few years newer and had thicker padding.
The helmet wasn't approved for racing because there was a theoretical risk of pedals or bike parts poking through the holes. So, at that time, the leather hair nets were legal, but the skid lids were not. Likewise, it was probably not rated for mountain bike riding. But, likely was ok for the era for typical road commuting.