Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great after a few times

This bottle takes some initial getting used, as we're not used to typically drinking from a straw. But after the first couple of days, I really like the bottle. This .5 is way too small for the gym, so I ordered the .75ml. I'll use the smaller one in the car. The blue is a great color.After using for a while, I'm not crazy about the exposed mouthpiece. I'm careful about germs and the bottle can fall, roll, etc. It just doesn't seem very sanitary.