After reading very mixed reviews I was somewhat apprehensive... but not so much to not try and I'm glad I did. No problem with TSA, not even a sideways look (honestly, it is just a hair bigger than quart size). I flew domestic US flights direct. Held everything I needed plus some. The plastic does feel rather cheap and thin but I can assure you, it held up well and the zipper is strong. I was worried when I stuffed it in the side pocket of my duffel to be easily accessed going through security. I must say it held up like a champ and I'll admit, I abused it. It still looks and functions as if I just purchased it.