Elixir LED Flashing Lighting Safety Pet Dog Nylon Flat Collar Fashion Protect Yourself and Your Friend Together at Night! 1. 100% Brand New & High Quality 2. Material: Nylon & LED 3. Available Light Color: RED, YELLOW, BLUE, WHITE, ORANGE, GREEN, PINK 4. Various Size Available: Small, Medium, Large, X-Large * See size chart below before purchasing. - Small: 14.2" - 15" Adjustable Length, 1" Wide - Medium: 16.15" - 19" Adjustable Length, 1" Wide - Large: 19" - 22.9" Adjustable Length, 1" Wide - X-Large: 20" - 26.7" Adjustable Length, 1" Wide 5. Providing safety for your small friend while it"s out alone at night 6. Easy to Use: Simply pushing the control button 7. 3 Flashing Modes: Fast Flashing - Slow Flashing - Continuously On 8. Operated by 2 x CR2032 Batteries (Included) 9. Highly Visible within 1000 ft.