The problem I had (and did internet search) was finding WHAT material the tubes I had were made from. Wasn't exactly sure. I had a company send me some samples, and come to find out what I thought were the tube material I wanted was a harder/brittle material. Was poly too. But makeup was stiffer and would crack. I'm a "feel and see" type to make sure i'm getting the right stuff. Don't want to make a huge order and then find out I have a few thousand feet of what I won't be able to use. Plus, I'm sure if I buy in bulk, there would be PLENTY of people who wouldn't mind buying some cheap. Now would there?