We are five close friends from Switzerland and alumni who recently graduated from the Swiss Federal Institute of Technology in Zurich (ETH Zurich) and the University of St.Gallen (HSG). We love sparkling water. However, we want to consume it in an environmental-conscious way. The plastic pollution generated by PET-bottles is enormous. About 1.3 bn plastic bottles are sold daily which would be a pile half the size of the Eiffel tower. Therefore, in summer 2020, we brought Bottle+ to life and are working on this mission ever since to make sparkling water available anytime & anywhere without single-use plastics.