This is a Xiaomi Mi Roborock HEPA filter adapter for mounting on Decathlon snorkeling mask though an another printed adapter.
The mask mentioned is a full face mask that should protect one fairly well in case of various viruses. The idea is to mount it on the intake tube.
NOTE: You still need to print the mask adapter from the link above.
Printer Brand:
Prusa
Printer:
Prusa Mk2
Supports:Yes
Resolution:
0,20mm
The author marked this model as their own original creation. Imported from Thingiverse.