GENIUS NIGHT LIGHT COLLAR
Genius Night Light Collar is an extra large collar that can be sized down to a small to medium dog.
Instructions for sizing:
Carefully pull out one side of the PVC and cut to your dog's size. It is better to be safe and leave a little room. When you cut make sure it is straight. Then slide it back into the silicone tube and make sure it is all the way in to the end.