Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Feh...

It is a well made bottle, but I didn't find it very functional for cycling. It seemed to me that the insulation gave me an extra hour of cold over a comparable water bottle filled with the same amount of ice, but I'm not sure if this would keep fluid cold any longer than a bottle of the same size where the volume from the insulation and the inner layer were simply replaced with ice. The lid screws on and isn't attached to the bottle, so it takes full use of both hands to manipulate if you want to get a big gulp.I suppose there are other times when this bottle might be useful, but if I'm going a little larger in size, our Nalgene liter bottle with an insulating jacket over it is significantly more efficient than this thing. Furthermore, if you want something better than that, Thermos makes some excellent stainless steel water bottles with easy access lids that will keep stuff cold all day with a few cubes of ice.