I got it for short mountain hikes where, because of weight, flexibility, and backpack size, I didn’t want to carry a thermos. In terms of keeping the temperature, it helps, but only a little. At best it adds half an hour to an hour, and that under ideal conditions (not exposed to the sun, not held in someone’s hands, etc.). It does, however, have another, more important advantage. It does not allow moisture to condense around the bottle, so clothes or other items inside the bag do not get damp. For this use, it’s just fine.

For light use, it is a value-for-money product. However, if you want it for camping, hunting, hiking, etc., it's better to go for something more expensive.

The logo on the outside is not the same as the one I received. I mean, it doesn't have the Panda symbol on it, it only has the letters that spell PANDA. Other than that, I got them to put glass bottles inside so I wouldn't drink from plastic ones. It keeps the water cold and the glass bottle doesn't get knocked around, so I'm not afraid it will break. I recommend it

If you only put cold water, it doesn't last long. I, who put almost ice in the bottle and fill it with water, it does its job.

It is user-friendly mainly due to the ease of placement and the fact that you do not need to open the zipper every time you want to drink water. However, it does not keep the water cool and I would say it is just better than nothing, but that's it. If you are really interested in keeping cool water for at least a few hours, go for the zippered type. Personally, I use it with bottles that I have filled with ice halfway and it helps me not to freeze my hand and not to wet the rest of the items in the bag from the melting ice.