My 500ml matte black/black bottle came in its cool packaging and along with the black top I found the standard top too so I have an extra one as well. I had serious doubts about the fact it could actually keep the drink cold but... it works! Seems a bit of magic. The exterior stays perfectly dry and at room temperature while the cold water stayed cool for at over 12 hrs. The declared 24hrs can probably last if you put ice cubes in the bottle as suggested on the website. The bottle also has a great look and feel so I'm totally satisfied. If I really wanted to find some cons it would be the price and that it took over 10 days to reach Italy from the UK and the tracking isn't very helpful. BTW, two friends saw and tried the bottle and now want to buy one too! ;)