What are cushions made of - how to repair tears?

[cmeurer]

Hi everyone! We have a Forest River popup (Flagstaff) and the cushions have some tears that I would like to repair. I think the product Tear-Aid will work but they have 2 types, A and B. B is only for Vinyl and A is for most everything else. See https://www.tear-aid.com/

What are the bottoms of the cushions made of? I contacted Rockwood and they didn't know - they said that the cushions were made by Flair Interiors which has gone out of business. So does anyone know what the bottom material is - or how best to repair the tears?

THANKS!