Case for glasses that uses 3D flexible structure. This model is printed flat and then folded into its final shape.
There are small user support blocks under the side wall radiuses and it is intended to be printed with 0.2mm layer height. If you don't want these support blocks you can split the model in the slicer and then remove them. But then you will have to use another supporting method in these areas.
I printed this with PETG, 0.2mm layer, 3 perimeters.

The author marked this model as their own original creation.