I like this helmet. I have yet to have a fogging problem in freefall. The visor does fog up under canopy but what full face doesn't? The two button locking system is good and bad. Good because it keeps the visor secure during freefall, but bad because it does take some practice to use both hands to push both buttons in and twist up. I always wear gloves and can still open it, but it does take practice. FOV is great and the helmet quiets the wind noise. The sizing chart is one size smaller. I wear a medium motorcycle helmet and my hat size is 7 1/4. The sizing chart states I should have a medium, but when I got it the helmet it was too small so I exchanged it for a large. It fits snug and great. The foam liner is thick and feels comfortable. My rating is a 4 because of how practice is needed for opening the visor, but other than that it's a good helmet.
