Negative sleeves for organization and clarity in the archive. Perfect protection against dust and fingerprints. With Euro perforation for ring binders and standard folders. Tested safety - free from chemical influences on the negatives. Removable table of contents included. This is a thermoplastic plastic. During production, these are welded. The film is airtight, meaning the film cannot breathe, which means residues of processing chemicals remain in the sleeve and cannot escape. This can become visible during long-term archiving (changes in the emulsion). Archiving negatives in a polypropylene film sleeve is particularly suitable for short-term archiving.