Excellent and very good build quality. The strap is very convenient. However, I expected it to keep the hot water warm for longer than it does.

I use it every day for over a year. It is quite well-made.
I use it exclusively for cold water and I have always been satisfied with the temperature. Even after a day passes, the water will still be cold.
I always hold it by the rubber on the lid and I have never had an issue, it seems quite sturdy. I have not bought another lid/accessory, I drink directly from it and it's okay.

After you take a sip and close the lid, many times there are drops on the two intermediate rotating caps, resulting in getting dirty. Otherwise, even if you turn it upside down, it does not leak. I would prefer it for water or tea, not so much for coffee (it gets dirty).