Joylive Attach to Collar Coat Safety Pet Dog Puppy Glow Light LED Tag Night Light Buckle Item Size:Length:5.5cm;Diameter:3.5cm;Thickness:2.5cm Helps to keep you and your dog & other pets safe during walking Easy to use: simply pushing the control button makes the light ON/FLASH/OFF All-weather lightweight dog lights, perfect collar charm when your pup is playing out in the dark night A quick and easy attachment and bright, long-lasting light are essential for everything from daily life to overnight adventures