I searched amazon 3 months before I broke my chin for a jaw protecting bike helmet and amazon could NOT find this for me. Note there is no description: MTB adult bike MIPS helmet, all of which which I don't care about. Amazon showed me a lot of 80 mph rated motorcycle helmets with no ventilation, and a visor that would fog up totally in humidity like today. I could have eaten solid food Thanksgiving Christmas & New Year's 2017 if Amazon's search engine was smart enough to key in to "bike helmet chin guard". Stupid computers. Stupid description from bell, too.
The bell description makes more sense when you look at their entire range