Instruct: Classify an Amazon review as either positive or negative.
Query: Better Than the Competition

I've been an avid road bicyclist for more than ten years and have logged over 50,000 miles. I ride year 'round, but during the summer (I'm a school teacher) I average at least 3,000 miles. Bottom line? I want my water cold, not just wet. Now, I'm not going to exaggerate. My Polar bottles work very well. I carry two and it's all I ever use.In the summer, I'll freeze one completely full and the other about three-fourths full and add ice cubes and water to top it off. Will it stay ice cold for an hour? Yes! Two hours? Well, even the completely frozen one will have melted. The Polar bottle is just no match for high humidity and high temperatures. I used to carry a gadget bag that was big enough to hold a water bottle. Away from the suns rays, it would stay cold for several hours.However, if you're looking for miracles, this ain't it. But I've yet to find anything that works better. HIGHLY RECOMMENDED