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The problem with airline flights is the 'fresh' air is blown down on you and swirls around you in all directions from the nozzle in the ceiling. Even if you wear a faceshield, the air will blow past the shield at some point and from some direction. Short of wearing a sandblast hood, this hoodie is just the thing to isolate your head from recirculated airplane air blowing into your face.
This hooded jacket has a substantial layer of fabric. In fact, it is quite warm and could be worn in cold weather. I normally wear MEDIUM jackets so I ordered a LARGE. The sleeves fit fine but the jacket is quite long at the waistline. But at least this protects your pants too. I leave the clear plastic shield zippered on and by lowering the front zipper of the jacket, I can easily pull the hood over my head, back and forth.
On airline flights I also wear a 3M 7502 elastomeric respirator with P100 pancake filters (what the medical personnel wear), and my head and respirator fits easily within the hood with the faceshield. The clear shield is a bit wrinkled from the way the jacket was folded and packed, so visibility isn't the best. But I can still see my laptop while I play and listen to videos. Again, plenty of space inside the hood for my Bose QuietComfort earphones too, in addition to the respirator. This jacket is also a great way to protect your clothing on the airline flight. After the flight, place it in a plastic trash bag until you can wash it.