Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very good quality

This is a good replacement for my stock inner tubes. I was surprise that something at this price has very good quality. I have inspected the tube before installing and I like the way it was built. The connection of the valve to the rest of the tube is seamless. This is far superior than the tube i have replaced which shows vulnerable areas - no wonder it got busted without any major trauma. I highly recommend this product.