Kristina Smithe was running a marathon in California a few years ago when she started thinking about all the waste such ...

Recommended Videos That sparked her idea for something more durable — a lightweight, pliable silicone cup that could be used again and again. After working out a design, Smithe ordered her first ...

Kristina Smithe was running the California International Marathon in 2019, grabbing cups of water to stay hydrated, when she ...