No worth the cost.
Fit was good and it is comfortable with the evs R4 but one of the ratchet locks on the side came apart during my test fit. Worthless small rivets. Put a real press fit rivet in each side and now its good to go. Also fits pretty well with my small camelbak backpack, without digging in around my collar bone like most roost deflectors do.
Protection is adequate for a track day. Would not recommend for woods riding. Also, doesn't breathe as good as my old Fox Air-Frame although have not rode with the back pad removed yet.
All in all when your on the track turning laps you may forget your wearing it.