As one who mends jeans often for husband on farm, I find this product perfect when the jeans shade has a purple cast to the denim. I find it both strong and buries well using the automatic mending program on the Bernina 200E (or darning). The key is using correct needles (110, give or take, depending on material) and stabilizer under the stitching to get a straight and professional look. If you match colors well, it hides so well the cows can't see it! Lol! I give it an excellent rating and the thread has never broken on me. I Recommend This ProductAbout Me: Sewer or QuilterSkill Level: Intermediate