The LED Lighting System is the perfect addition to your nighttime/ early morning walks. The ultra-bright LED front light and red rear light provide good visibility. Ultra-bright LED front light with a separate red rear light Easy attachment using the included velcro fastener, designed for all retractable leashes in the flexi VARIO and flexi New Classic lines (sizes S to L) Can be attached on either side of the housing (for right or left-handed users) Splash-proof