Instruct: Classify Amazon reviews into positive or negative sentiment
Query: No more leaks

After having been through many sippy cups, and children's travel cups that either leak, or are too hard to clean, or take apart- I have not experienced this with the Klean Kanteen. The Klean Kanteen keeps water cold, for a long time while traveling and although the Klean Kanteen does not claim to be leak proof, I have not had a leak problem, yet while traveling in backpacks or bags. I am pleased with this purchase.