https://smile.amazon.com/June-Tailor...rds=fray+block
I like this brand best because when it dries the fabric is still flexible and relatively soft.
I don't know if this is necessary to use on the slipper satin, but I just figure better safe than sorry
I have never actually returned fabric to Fabric.com - but on 2 occasions I got something that was wrong - whether it was me or them I don't know. They actually just gave me credit and told me to keep the fabric or donate if I didn't want it. It wasn't a lot of yardage, but I was pleased with how they handled things.
Now that Amazon bought out Fabric.com things are changing though. No real complaints yet I am just keeping my eyes open when I shop