I love how bright they are and that the LED lights are rechargeable. I use them every night for at least an hour (slow flashing mode) and the leashes, collars, and belts only require charging about once a week for an hour or so. Bicyclists, joggers, pedestrians, and car drivers have stopped to comment on how far away they could see me and my dog, how easily they could tell I was a pedestrian walking a dog from a distance (easier for them to plan their course of action as they approached), and asked for information on where they could purchase the items. Some of my neighbors have already purchased their own after seeing mine in use. I have used them in the rain and they work fine. Highly recommended!