This is an anti-reflection shield for the Xreal One. It has been redesigned to not obstruct your view, allowing for a clear line of sight downwards.

To attach with magnets, please glue on neodymium magnets that are 6mm in diameter and 3mm thick. If you are concerned about interference with the Xreal One's sensors, you can also secure it with a small rubber band.

This is a more standard model. https://www.thingiverse.com/thing:6962218

We have created a new model for an enhanced immersive experience. https://www.thingiverse.com/thing:7067636