Nite Ize NiteHowl LED Safety Necklace Dog Collar - Blue - 5" Diameter - excellent way to track your pup under the night sky

Bought and cut to size to fit my dog's neck, but never worn. The inside measures 5" - my dog's collar measures 15" including the end-to-end plastic closures 

This LED collar is loose on her by about 1.5" - hope that helps! My dog is 28 lb's 

Like new condition - 1st power button push lights the blue LED light to a solid illumination, another push on the button causes the LED light to blink off and on