The only positive thing is that the mouthpiece is not exposed.
In the negatives: With frequent falls, the bottom comes out, resulting in it no longer standing upright easily.
The straw sometimes falls from the inside. In other bottles, where the straw goes in, there is a silicone "ring" to secure it.
It does not keep the water cool, it is like a plastic bottle.
After 2-3 hours of filling it, the water smells like iron, rust (I don't know how else to describe it). In the bottle, I only put water and then always emptied it after school, washed it with soap and vinegar, and dried it with a towel. It has not shown any rust or alteration anywhere. I noticed the smell when I wanted to drink water and unscrewed the bottle to drink from the mouthpiece... I haven't used it since then!

Unfortunately, the straw does not suck, I take it out and it works on its own, I put it in the case and it doesn't work, I don't know what's wrong! In a week of using it, I don't know what could have happened