I am happy with this harness for off leash play, but would not trust it with a leash attached to it, as it doesn't tighten up and stay tight well. I also would prefer the light strip be on his back, rather than his belly and chest, as it would be more visible. Being on the chest does provide a glow for the dog to see by, but that's not really why I bought it. The lights are a bright easily visible green.The lights are bright and work great but the harness doesn’t tighten very well so it loosen on my dog luckily we just use it when we walk at night so it’s not a big deal still a great product.The harness clips do not stay in place. The ability to recharge is nice, but if it won't stay the size I need it doesn't help. I did keep the harness. I put it over my head and around my waist to light up myself.Good concept but bc of the material, it doesn’t stay in place, gets loose while walkingLights works great I can't understand why one of lights was under the belly where they couldn't see it and the straps kept coming loose as we walked down the sidewalk so I had to sew it to make it work and I ended up giving it awayHarness didn’t fit my 70lb shepherd mix well. Seemed bulky and he wasn’t a fan. Ended up returning.