I didn’t see any other posts on this topic so I’m either missing those or this is fairly new - I noticed that the PETG Matte filament is now listed in the US store - I believe that it was available in some other regions previously.
Looks like you can leave out of the package for at least several… hours?
Their instructions don’t seem to match this graph.
2. Drying Recommendations
Dry the filament before printing if it has been exposed to humidity above 50% RH for more than 72 hours. For more details, please refer to: Filament drying instructions on WIKI.
I see it in the Asia and UK stores. Did not check any others.
Colours are very pastel. Wish they had more colours. However, many other companies sell those other colours, so perhaps these were chosen on purpose.