stardrift Nylon Step-in Soft LED Dog Harness No Pull Adjustable Glowing Pet Safety Belt Built-in 2 LED lights,keep your dog or pet safe in darkness and help you know exactly where it is 2 LED lights are detachable and has 3 flashing models:Slow flash, quick flash and steady glow (just push one button to switch).Built-in batteries can be easily replaced when the power is off. Easy wearing:just step in then buckle it up,very convenient Strong Nylon Webbing design,comfortable wearing and durable for a long time use 6 colors at your option:red,yellow,blue,green,orange,pink;3 sizes at your options:S,M,L