I ordered the patches since I cracked cross at knee level have in several jeans (probably because I kneel for our small children often on the floor). I ironed the patch from the inside, so you can see even the torn fibers from the hole he is about and is especially not larger. I have the iron pressed 30 seconds to be patches (to instructions to 20 range), but as soon the substance is not damaged and I wanted to make sure that the glue melts. The patches hold now works properly even after repeated washing in all pants! When wearing, I feel that is not patched trousers, the place with the patch is hardly noticeable stiffer. One should only note the larger cracks, for example by a seam to the other across the leg, too big for one of these patches. I have two patches stuck next to each other in this case, what worked well.