They are bright red and made of a material that is not rubber or plastic.... it's playable and does not Crack. My cases are all from 1960s and 1970s according to seller and can be twisted and no harm befalls them. They are slip top and as far as I can tell no one makes anything similar. I like that if I knock a loaded box off on the concrete floor of my basement nothing breaks or chips. Does anyone think this might be a viable product to reintroduce into the market again?