The corner of our 20+ year old duck cloth slip-covered couch has been aged so much that the fabric has become brittle and rips a bit more every time I put it back on after washing. I tried sewing what I could, and then ironing fabric interfacing to the back of the whole arm to stabilize it and keep it from ripping any further, but even heavy duty interfacing is not heavy duty enough to stop the run. Seeing how many people had been using this stuff to repair boat and BBQ covers, I thought I'd give it a try. Because our couch is not quite white, but not quite as dark as their available beige patch either, I bought the white and soaked it in the same watered-down taupe dye that we use on the couch cover. It didn't take the dye as much as 100% pure cotton would (came out a bit rosy) but it certainly matched better than it would have. I was afraid that my dye job would affect the adhesive, but it did not. The material was soft and easy to stick on around bends, but feels as rugged as the original cotton canvas. I think this will hold until we can get a new cover made, and look pretty good while we wait... just make sure you ROUND the corners of your patch, as patches usually fail by something snagging a sharp corner. I saved the 2nd sheet to make repairs to camping gear and outdoor furniture. Highly recommend!