Electroluminescent or aka El Wire collars are the latest technology in Phosphorus lighting. Excellent for Police dogs, Rescue dogs, Emergency dogs, Seeing Eye Dogs, Guard dog and all residential pets. Aid in providing safety & trainingwith the use of the flashing light which dogs do learn to respond to. El wire pet collars are only available for dogs at this time.The usually come in a sturdy double reinforced nylon collar with a black nylon overlay. This overlay is particularly important in not allowing the light from the El wire light to be absorbed and instead the lightreflects outwards with abrighter luminescence. Adjustable , reflective edges withsolid background invarious Colored lights.