Trail helmets tend to cover more of your skull, especially the sides and back of your head. That's partly why they feel bulkier compared to a road helmet. Also it's surprising how useful the sun peaks on them can be. If you're mostly doing XC pootling, nothing wrong with a road lid. But anything faster and rougher, the extra protection - even if you never need it - is welcome.
Once you put a full face helmet on, you feel almost invincible (but hot)
Trail helmets tend to cover more of your skull, especially the sides and back of your head. That's partly why they feel bulkier compared to a road helmet. Also it's surprising how useful the sun peaks on them can be. If you're mostly doing XC pootling, nothing wrong with a road lid. But anything faster and rougher, the extra protection - even if you never need it - is welcome.
Once you put a full face helmet on, you feel almost invincible (but hot)