Especially in the form of already-woven fabric. I have a backpack that's made from industrial hemp and cotton. Is it allowed in Singapore? Is there an actual law source that could confirm this? All I can find is people who are confused about what (industrial) hemp is in the first place at TripAdvisor and other sites.
For reference, the backpack is something like this (not the exact model):
I mean this may seem a bit stupid but better safe than sorry I guess.