Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Comfortable, but defective

I bought these for my husband for Christmas and he thought they were great, very comfortable, good fit, didn't slip off his heels. But in less than a month, the lining of the toe area of BOTH slippers fell apart, noticed when small pieces of the foam lining were coming out. Very disappointing for what we thought was a nice high quality slipper.