This bag is for the protection of unprocessed film against hand baggage x-raying,

Protects film from harmful x-rays, Necessary for when you're traveling with unused or undeveloped film.

A must have for film traveling.
Durable, triple-layer construction, only 9oz, not overly heavy, It holds several rolls of film.
Perfect protection for hold several rolls of film like 3-6 rolls 135 film roll, 3-4 rolls 120 roll film etc.

Works well for walk through different x-rays machines at airports or airport baggage machines (TSA) with this bag and without any fogging on your photos.
Hook and loop closure keep bag securely closed.