This LED light up pet collar and leash set is specifically designed for safe nighttime pet activitiesConstructed with high-quality nylon material and PVC coating technology, creating waterproof and sweat-resistant durable webbing that performs even in rainy conditions Built-in efficient LED beads provide bright illumination with three light modes to meet different environmental visibility requirements Both collar and leash feature adjustable designs suitable for dogs of all sizes, from small breeds to large breeds Dual protection with reflective materials and LED lighting significantly enhances nighttime walking safety for peace of mind during evening walks USB charging design offers convenient and fast charging, with single charge lasting multiple nights of use Sturdy metal buckles ensure secure connections preventing accidental escapes, providing comprehensive protection for your beloved pet Multiple color combinations available including black, orange, blue, and yellow to suit different aesthetic preferences, keeping your pet both safe and stylish