I don't know if I just got a bad box or something, but the nose area on several of these masks is EXTREMELY painful to wear, very abrasive. I wanted to wear them on long flights, but after even just a few minutes my nose is literally scratched raw and extremely tender for hours afterwards, so I can't bear it. I'm sure the filtration is great, but since I can't wear it without being in agony after just a few minutes, unfortunately they're useless to me. The headband elastic part is fine, and the seal on the rest of it felt fine, just the bridge of the nose could not have been more painful if they tried. :( I'll stick with other masks, unfortunately!