I'm very happy with the fit of the bumper. It also covers a dent on the bottom of my bottle and keeps it from wobbling. I just wish there were more colors (a light or mid tone grey would be great).
The color is perfect. I love how it retain the coldness of the water. The only thing criticism that I have is that the O ring is a little bit of challenge to clean.
I love it in general. I didn’t care for the lid, it allowed small pieces of ice into my mouth. So I just ordered the other type of kid and it’s good to go!