Pesp&reg; Pet Dog Colorful Leopard Flash Necklace LED Light up Glow Night Safety Collar Adjustable Quality D word ring design, can be hung leash bells, etc. Made of high transparent TPU optic fiber, lighting evenly and mildly. 3 lighting modes: Constant on, Strobe and Flashing (with switch to select). With buckle, easy and convenient to wear and remove. It is also an excellent way to ensure both you and your pet's safety.