It wasn’t rolled over a tube. It was tightly rolled and even bent at ends. Would not lay flat. Full of bumps and creases. I used my steam cleaner with clear water to try to steam the creases out. That didn’t work and the water was black afterwards. Obviously the carpet was very dirty. The fact that the carpet was rolled up without a tube, and very dirty, makes me wonder where it came from. Was it a return?  If so I am particularly worried about that during Covid. Carpets carry all kinds of germs. I hope that it was brand new but then why was it so dirty?  There was actually sand in the cleaning water, so it wasn’t just dust. I’m not happy or impressed.