I bought this helmet last year after reading numerous reviews by users who wear glasses. I tried on an oxygen A3 but my glasses didn't fit very well under the flip up lens. My first jump with it sucked pretty bad, the face shield fogged up instantly, pulled early because I couldn't see the altimeter. Inside the face shield is a removable pad that fits around your chin and lower cheeks, I removed this and cut a nice big hole where the main vent is in the front. I then drilled about 11 1/8 inch holes through the plastic face shield along the lower edge just above the chin bar. This seemed to solve the problem. I have put about 25 jumps on it and have had some minor fogging but it is minor. My only issue with this helmet is that once I'm under canopy and flip the shield up it does limit your peripheral vision, just means you have to be more careful and really twist your head around checking for traffic. All in all, a great helmet, I love being able to put it on and leave the shield up until I'm in the door, and can close it quickly and securely before stepping out. I took a kick to the head the other day and other than the noise didn't really notice it. Apparently it was a hard kick the other diver complained about his foot hurting :-)
