Hmcity LED Nylon Pet Dog Cat Collar Peppy Dog Led Flashing Light Harness Collar Pet Safety Led Leash Rope Belt (blue) Adjustable Water Resistance Nylon LED Lighting Dog Harness Vest. Small, Medium, Large, Extra Large and 2 Extra Large Size, Perfect fit for the small, medium, large dog. LED light glows and flashes in darkness. Helps to keep you and your dog & other pets safe during walking. Provide safety for your dogs and pets while it's out alone at night Luminous dog harness, the latest Chest harness combination, practical and comfortable.