Good product but not the right one for the most demanding.

I'd like give five stars to this nice bottle, I think materials and styling are good, it is one of the more aesthetic from all similar products; I love how it looks but its performance it's simply not perfect. I put some ice on cold tea at 6 am and just three hours later it had melted your drinks will not heat along the day but won't keeps as fresh as you wish either, I think the weak part of the bottle is the neck it clearly gains (o loses) temperature there, insulation seems to be defective right there.

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