Instruct: Classify Amazon reviews into positive or negative sentiment
Query: 'Developed a leak before we were even able to use it! VERY flimsy!

We had this same brand a few years ago & it was great, but this time, while unpacking it, I noticed that it was very thin. Sure enough, before we were even able to use it, it developed a leak. We just threw it away because it was too bulky to think about returning. What a waste!