Dog-E-Glow Product Features: Safety and Visibility! Flexible LED tube sewn into each leash allows this dog leash to look good in the light and at night! Plus, it feels like a normal leash. The easy-to-use Push Button technology comes with two settings: 'Constant Lights On' and 'Blinking'. When leash lights are on, leash is visible up to 1000 ft in the dark with 100,000 hours LED life! Batteries and replaceable batteries are included. This highly durable, lightweight leash is also weather-resistant. Pair with the Arkansas Razorbacks Lighted Collar for a hog happening time!