||Just brilliant. I doubted the claim that it could be seen from 300 yards, but it can. Most reflector jackets only become effective when light shines on them (car headlights etc), but this is a constant light. My dog will not normally wear a coat, as I think he feels restricted, but because this one is so lightweight, he is happy to have it on. Well done. This is the best piece of equipment I have ever bought girl him, and believe me, I've bought a few!