Hi everyone! Whoever has owned one of those Brita waterbottles knows that after some time, the rubber mouthpiece stains and gets a little "moldy". That's why I decided to design my own mouthpiece replacement so that I can solve the problem. It took a few tries, but I finally got to this design that is lighter, softer and allows the lid to close and seal the bottle. If you had the same problem, check it out and let me know waht you think!