Hi, new, I am totally non-technical. Have 6-yr old son with autism. Flying is complete agony for him, due to engine noise that is overwhelming to him and air pressure changes. We desperately need noise-cancelling HPs that will really work for him and fit his head. He cannot go through another flight like the last one, he shrank into his seat and sobbed and screamed for over an hour, holding his ears from the noise and begging us to make it stop. We were helpless to comfort him. This noise tolerance issue has worsened over time.
What's the best, what will block out the most sound but not be too heavy for his head and neck?
Any help you can give we are grateful for.