Upcycled table-mats

After coming back from India, I found that my four table-mats were missing. I couldn’t find them anywhere. Anyway, I had another four spare mats, and I had started using them. However, those mats, which were made of bamboo, didn’t last for long. I desperately needed another four. As a frugal person, I decided to make four mats out of old clothes. Here are the end products. Do you know what material I used here?

I used my son’s baby blanket, my hubby’s old torn t-shirt, and my old dresses.