Hello There, I had the glasses some time 4 times a week in use in an indoor swimming pool, which is operated with ozone. Apparently, the rubber can not tolerate it. The tapes were greasy and have destroyed me some clothes and towels with Schwaz goo until I found the culprit. The glasses were out a few months in the closet. The rubber bands were then completely hard and brittle and disintegrated. The spectacle itself was great and the rubber seals on the glasses themselves were not affected, only the bands.