EdW

Folding the slider in half (by taking the quarter that you would pull toward you and folding it back toward the other half, i.e., the tail) was suggested to me, and it works pretty well. (When I got rid of my old Monarch, for which you had to put about five rolls in each half of the nose, and got a Pilot, I found that the openings were unbelievably slow.) I think once you've slowed the opening down enough to be comfortable in any situation, anything slower is just wasting altitude.

I have a 23 3/4 inch head, and no other full face helmet would really fit, and none was even close to fitting over my glasses, so I was still wearing my ProTec helmet with prescription goggles. The Havok is bigger, and much wider around the eyes, so glasses fit easily. The "sizing" is really from the liner, and I found that a combination of parts of the XXL liner and the XL liner gave me the perfect fit. I would like it if it tucked under the chin better, but it's snug enough. The fact that the entire front flips up (instead of just the visor), makes it easy to get on and off, but the person in front of you on the plane might bump into it when it's up.