How would you improve a water bottle?

Focus on identifying specific pain points or limitations of existing water bottles, such as usability, portability, or sustainability. Consider user demographics and scenarios—think about athletes, commuters, or eco-conscious consumers. Explore innovative features that could enhance functionality, like built-in filtration, collapsibility, or smart technology integration. Be prepared to discuss the trade-offs of your proposed improvements, including cost, manufacturing feasibility, and market differentiation. Finally, think about how you would validate your ideas through user feedback or market research.