Ordered 2 Light Bark Urbans, had some problems with lights, contacted customer service, quick response, and service! sent replacements! We love these lights, bright, batteries hold power,rechargable, Recommend you measure your dogs neck, I bought Med, and did some trimming for custom fit, Overall, quality product, and most of all , they service what they sell! Also, its the best looking ,compared to the other dogs at the dog park