I used this on some Halloween hoodies and I really like it. They glow clean, not blurry lines. It’s fun to play with. I have not washed them yet, however I have had good turnouts with other Stahls products so I don’t expect any difference.
I am using this for a larger order, but had to try it out personally first of course. I was pleasantly surprised by how much it glows when the lights go out! Here are pictures with lights on and off, but to be honest, the lights out picture does not do it justice. It's very bright.