The ellipse widens the bladder and causes it to be better ventilated and thus dry faster. The formation of bad odors is reduced and can thus extend the life of the bladder.

The ellipse was designed for the use with a 2 liter water bladder manufactured by Source.

The model was developed as a proof of concept. For regular use, I advise the use of food-safe manufacturing materials and processes.

If you like the model buy me a coffee :)