The only downside is that you need to hold the bottle with your hand to open and close it. Even when the child learns to open it with their teeth, for closing, you or the child still need to hold it to press it closed so that water doesn't leak in the bag.

The water is running. As a result, the little one gets wet. I think the bad smell is due to the food that goes inside as the little one tries to drink water. It didn't help us at all.

As a packaging, the water bottle is quite sturdy. The replacements do indeed change easily, but they are of poor quality. The silicone on the mouthpiece easily deteriorates, peels off, and pieces come off. And replacing it within the frequent time interval required significantly increases its cost.