Medium size light up flashing macaroni dog collar This stylish dog collar lights up and flashes. This dog collar has the macaroni pattern with teal, fuchsia, and white macaroni shaped circles on a fuchsia background. When on, the white, fuchsia, and teal circles flash. Press the center logo button to turn the flashing illumination on or off. Press the side button for a timed limited flashing illumination. The dog collar is made of a durable and comfortable soft black nylon. The dog collar is adjustable and available in 3 different sizes: small, medium, and large. Small is for 10" (25.5cm) to 14" (35.5cm) necks, medium is for 13" (33cm) to 20" (51cm) necks, and large is for 16" (41cm) to 26" (66cm) necks. Uses two CR 2025 batteries that are included. This dog collar is an international award winning pet product. Great for walking your dog at night.