Great CD cases. The clear part, made of polypropylene, basically can't break. These CD cases will last a very, very long time.
The polypropylene is a bit less transparent than regular clear plastic. It doesn't matter to me.
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Thomas Verified Purchase
I confirm these cd cases won't break because of pressure or shocks but they are less transparent which is a bit annoying as I intended to use them for CD case replacement for music records that have nice artworks.