Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Comes Up A Little Short

The product works as advertised. The LED solid on or flashing makes it easier to see the dog in an off leash environment. When walking on the street, my experiences are mixed. I think that has more to do with drivers paying attention than the product. The light is difficult to see if the dog is heading straight for you or away from you. It is very clear from a side view of the dog. The only disappointing issue is the measurement. The medium collar states that it is 18 inches long. However that includes the total clip, one inch of which snaps into the clip making it 17 inches long. Had I known that I might have opted for the larger size. With the dog's winter coat, she has a lot of hair around the neck which tends to overlap the collar making it a little difficult to see as she moves around. Without her winter coat the collar length should be fine.