Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Nice Bag with Zipper Problems

Nice case, but it has a major problem. The shoulder strap holder digs into the zipper threads causing the zipper to come off track. I bought this new on Amazon and had to have it replaced by Marware after only 6 months of use. The replacement case had the same zipper problem again 6 months later. Contacted Marware again with no response.