Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Maxell clear jewel cases

These cases are not suitable to replace broken clear jewel cases because there's an area of ridges along the left side that obscures the artwork, and the tray where the CD sits is made of frosted plastic, which also obscures the artwork. The jewel cases I received are not the same as those pictured in the Amazon listing. They are also made of very thin plastic and feel flimsy. They definitely aren't "...superior in quality, manufactured and designed to exceed the industry standards," as the Amazon listing states.