Dog collars with matched lights provide 3 lighting modes (steady on, strobe & blink), lit up as flawless halo around your pets neck, bright in dark area, make ultimate visibility and safety for your pet from all angles. One button battery is included, easy to walk you dogs around the neighborhood in the evenings, no longer worry about traffic at night. NYLON fabric with high density webbing, durable, easy to adjust, breathable & comfortable for dog's long time wearing. Buckles are made from ecofriendly plastic. SAFETY pet collar easy to track your pets while camping, in the backyard, on evening hikes or if lost at night.