Instruct: Classify the given Amazon review into its appropriate rating category
Query: Quite nice... but not perfect.

I bought this to use instead of a backpack-style hydration pack, looking to get rid of the backpack. This does that PERFECTLY. The weight is down around your waist instead of on your shoulders, and you don't have a backpack preventing air from cooling your back. Yay! Now, the less-good. First, this can't hold as much water as a backpack. If you do extra-long rides, this may not be for you. But, with a full bladder and some tools, this can really sag down off of your back, and if your seat is dropped, this can rub on your rear tire. Also, because the hose has to drape behind you, this is NOT something you can take a sip from as you ride, you definitely have to stop. Also, the magnet is not terribly strong, more than once I've had the hose come loose, dangle, and smack on my tire as I was riding downhill. So... pluses and minuses. All in all, for me, the pluses still outweigh the minuses, and I still use it instead of my backpack. Your mileage may vary.