The plastic is quite strong and appears to last about a month with "normal" wear. I replaced my first one after the plastic started bulging out of the corner. The screens are easy to install by watching the installation video which is very well done. These types of screen protectors aren't as durable as hard plastic, but they hold moisture and aren't for me. I'm sticking with these soft plastic self-adhesive screen protectors, although I might try a different brand once the remaining five I've bought are gone. (NOTE: The #2 screen protector has a small defect that doesn't bother, but is a bit annoying with the new screen protector.)
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