This product is called Transfer Artist Paper (TAP) and is an update on the old fusible transfers that I used about 10 years ago. This new product gives a much better result, not the stiff and glossy look of the photos that I put on fabric back in the day.
Barb made this great tote bag with the TAP and a printed design onto a solid linen-like fabric. She even personalized it with her own name printed into the design! The bag pattern is the Alice Book Bag by Betz White.
To help you understand some of the many ways that you could make use of TAP, here is a short video demonstration: