Instruct: Classify the given Amazon review as either positive or negative.
Query: Poor physical design

We purchased five Sony 256 MB USB 2.0 Micro Vault flash drives and of the five, two have broken cases. Both broke in the same place lending us to believe that the case is weak. Both cracked right in the middle of the drive where the plastic neck piece is glued to the wider bottom.We will try to see if we can get a replacement drive as these drives were only purchased on 3/30/04 but who knows if they will give a replacement as their warranty only states that they will replace it for the "normal life" of the drive.