Garrett Petersonwrote a review of Bell Super 3R MIPS Helmet on December 4, 2017
Familiarity: I've used it several times
Full face helmets used to be incredibly heavy and breathed terribly....the Bell Super 3 changes all that. You can easily detach the lower portion of the helmet for a climb, attach it for the descent, and add protection to your face. I have had a few spills that could have been much worse if I was not wearing the face guard portion of the helmet.
I use mine for enduro racing and big rides like Monarch Crest and the Whole Enchilada. The added protection is a massive benefit and you sacrifice very little weight when the face guard is in your pack for a big climb.