I think you have to try a few different styles to see what fits your face the best in the helmet you use. Been useing Progrip for about 4 years now, they seem to fit my face well. I carry 2 pair, a clear set that get darker as the day gets brighter and an amber set that also get darker. They have a very wide foam seal to keep that nasty fog from forming on the inside. Both my sons race motocross and they have been useing Progrip or Utopia for both dirt and snowmobile. As for keeping the fog to a minimum I try to breath in through the nose and out and down through the mouth.