"I am a Marine helicopter pilot at Quantico, Va....I just wanted to say ‘thank you.’ The first day I used my helmet (with Oregon Aero® Aviation Helmet Upgrade components), I flew over five hours. With my old helmet liner I would have been assured of deep red marks on my forehead, circles around my ears, and a nagging headache. After using your helmet and Ear Cup liners, I was surprised to find no red marks or nagging headache. Also the comfort and fit of your products cut out outside noise much better than before.