Bests & Worsts Reviews from Amazon

I use this product like anyone else would use a water bottle - and probably less actively than most of those with the "sport edition." Ninety percent of the time, it is on my desk at work, in my car, or at my home. I did want something a little heartier, though, since I dropped my last bottle and the dents caused it to wobble. And I love the design of the cap. I was thus shocked when, two months after buying it, whatever glue was fitting the inside threading and seal into the top of the cop where it screws onto the mouthpiece just randomly became weak. The threading piece and stopper inside became unattached, making the cap unusable. I now have a $33 large insulated cup, unless I shell out another $8 for a cap, so that this one can break too. And this is the sport cap, so it is supposed to be stronger. Only time I have ever encountered a water bottle cap that falls apart when you tighten it.