Bought this Brita water filter bottle as we were going on a trip round Europe and we wanted to be certain the water we were drinking would be filtered and less likely to cause any upset tummies.  We found it worked perfectly for our daily water requirements and saved a fortune on bottle water.  It’s very happy in a rucksack and in your pocket whilst walking.  The only drawback we found was if you lay it flat in a tank bag or topbox it leaks a little.  So, we looked at how to stop it as it was doing a good job, always turn the Brita logo down and the joint on the lid top up and you do not get any leaks.  We love it.