EverTrust(TM) Wide 2.5cm New Safety Dog Collar Nylon LED Pet Dog Cat Necklace Light-up Flashing Glow In the Dark Lighted Pet Product S M L XL LED light glows and flashes in darkness. Bright light can be seen from far away. Helps to keep you and your dog & other pets safe during walking. Provide safety for your dogs and pets while it's out alone at night. Also work as a decoration: let your dog more attractive.