Have you worn a wire cage or visor before? If you've not played hockey why not put on your son or daughter's hockey helmet with a wire cage and tried to do simple tasks in 15 minutes you would lose your mind. Now do this simple test the next time your player is on the ice... look to see if you can see their face clearly through the mask. If you can not how can you expect him or her to track a fast moving object while they are moving as well.