PETG filament (1.75mm size) from the manufacturer CC3D. This is a set of one roll of transparent and one roll of black filament (not sold separately). I purchased and used these at the beginning of April this year, but I no longer need them as I have printed what I needed. The black filament has more than half remaining, and the transparent filament has hardly been used. I used them in a dry box, but just in case, I plan to dehumidify them with a filament dryer and then send them in a zip-lock bag with desiccant. *Please note that preparation may take a little time due to the Golden Week holiday period.