It uses traditional vacuum cleaner bags that you can easily replace when needed.
From Amazon
Einhell Power X-Change 15L Cordless Wet And Dry Vacuum Cleaner - Powerful (80mbar) Cleaning Of Your Home, Car, Garage or Workshop - TC-VC 18/15 Li Wet Dry Vacuum Cleaner (Battery Not Included)
Conrad Electronic
Einhell TC-VC 18/15 Li-Solo 2347145 Wet/dry vacuum cleaner 15 l