Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best canning jar ever

The shape of the jar allows you to fit more jars into your water bath or canner. The glass is thick and beautiful. When these jars seal, you'll know it! The dome is super high, requiring the suggested heat and other safe conditions for canning. I have never had a jar that did not seal! Forget the little ping of other canning jars. Get ready for a loud pop! I love these jars, and they make wonderful gifts when filled with your canned goods.