This is an adapter to hold a Hydro Flask ( the 32oz or 40oz sizes) in a Tesla Model 3 cup holder. I bought a generic one off Amazon and wasn't satisfied with its fit, as it would move around too much when driving harder. This one is designed to not move around much, while also not being so tight it causes wear marks in the cup holder.
Tesla_Cup_Holder_for_Hydroflask.stl | 910.2KB |