This LED lighting system from Flexi is designed for easy attachment to their New Classic and New Comfort leashes using a velcro tape system. It features individually switchable front and rear lights for visibility. The system includes batteries and is suitable for leash sizes S, M, and L. It can be attached to either side of the leash housing for right or left-handed use and offers a battery life of up to 60 hours. The package also comes with a decorative cover to protect the velcro when not in use. This model is black and universal for New Classic & New Comfort leashes.