We use the satchels a lot and there was a problem with a couple of batches earlier this year. The strip that covers the adhesive in the label window was almost impossible to remove without damaging the satchel. The satchels were still usable and it was really no drama. I just left the strip there and stuck a strip of clear tape over the end to seal the label section. The more recent deliveries of the satchels have all been fine.