Illumination has come full circle, literally. Our brilliantly durable NiteHowl LED Safety Necklace is made with a flexible polymer tube, illuminated by two bright LEDs, and simply slides over your dog's neck for hours of nighttime fun & safety. Just trim the tube to a custom fit, give the button on the durable, weather resistant housing a quick press, and the entire collar lights up a full 360 degrees, making your dog clearly visible from all angles. The LEDs can be set to either flash or glow modes - great for differentiating more than one NiteHowl-wearing dog. But, as fun as it is (like a neon necklace for dogs!), the best thing about the NiteHowl is that it keeps you and your buddy seriously safe on those after-hours walks, romps in the park, and campsite moon-howling sessions. Two bright LEDsEasily slides over your dog's neck as a bright LED addition to an existing collarUniversal sizing: cut to fit from 12 in. - 27 in. 30.5cm -68.5cmGlow and flash modes360 degrees of illuminationBattery run time: 60 hoursWeather resistant.2x replaceable 1154 batteries (red LED) or 3x replaceable 1154 batteries (blue & green LED) included