This is a bumper for the Anker PowerCore 5000 powerbank with an action camera mount (e.g. GoPro).
The powerbank can be used to supply the action camera with enough power since the most batteries do not last very long.
I printed this with flexible filament so it is a rugged bumper to protect the powerbank and also get a good grip so you can hold it safely.
The author marked this model as their own original creation.