I have to set myself since this bottle is in my possession, have to listen several times already :) Admittedly, it is really great although certainly some will ask why you need something. My water consumption has increased significantly by the bottle and I find it a good alternative to juices etc. Just a few frozen fruits in use and you have even after four-time filling (depending on the fruit) flavored water and even now and then a couple fruit pieces in this drink. From the functionality I have to say that I was skeptical at first because of the closure of the fruits insert seemed somehow never "to" be correct but expired is actually with me anything yet, only once I had forgotten to close the drinking closure of the lid and me thus somewhat sullied when shaken ^^ Discoloration did not exist until now. Have the bottle already a couple of days in use and do purely prefer raspberries. Initially one should the bottle but not directly in use, but rinse thoroughly (for me to understand the saying but I would imagine that many other via plastic taste anything else longer -smell complains /). Can the bottle therefore recommend :)
PS: It is also a very good travel companion. Water pure drinking prior to check-in empty and then refill.