I have the bottle for a year now and she is regularly in use. In conjunction with the neoprene cuff it even looks good after a year. However, the coating has the inside at some point began to loosen. At first I thought it deposits by drinks (tea, juice) but on closer inspection, I realized now, unfortunately, that just the inner coating is broken. With Amazon return after one year is unfortunately not possible, so I have to look around for an alternative me now. That's too bad.
