Hello Product Hunters! Stephan here, founder of Meerflasche and creator of unda 3-in-1 bottle, cup and storage. We are very curious about our soon starting Kickstarter campaign. unda has more than 15 features and helps to reduce 320 single-use bottles and cups! help us to save the environment with your sustainable lifestyle! I’m happy to answer any questions, gather more suggestions, and invite you to join our the #undalution