When my set of 4 Sima Filmshield Jumbo pouches lead bags started to look worn I bought 4 more and put the old ones inside the new ones for protection against multiple trips through the X-ray machine. Protects unexposed film packed in checked baggage too. No hand inspection needed. With your film in these doubled Sima Filmshield bags it can go directly through the X-ray machine with no damage to exposed or unexposed film. These are used lead bags but in good shape. They are the jumbo size
for up to 60 rolls of 35mm or 120 film or several boxes of 8x10 sheet film and holders. If you are careful you can get 80 to 100 rolls in each of these double bags. The dimensions are roughly 14"x17"
with a 3" gussetted bottom.