Instruct: Classify the given review into positive or negative sentiment.
Query: Cool and Clean

This water bottle looks and feels sleek. It keeps room temperature water cool and tasting perfectly clean for days. When you fill it with ice water, it keeps the water cool for hours. The loop on the cap is fun to hold when you carry it, or you can loop something through it to hang it on your pack. It fits in my car cup holder and permanent marker sticks to it if you want to put your name on it, which I recommend, as it is a popular bottle style. Cool and clean!!