GLCON LED Wristband for Running High Visibility led light core design makes it perfect for night running. The flashing lights increase the visibility, could be seen by the car, truck etc after dark to confirm security when running, cycling, walking, or dog walking at night 4 pack, 2 pairs: red and black. Perfect to be as Thanksgiving Day, Black Friday, Christmas, New Year small gift. Not only suitable for night running, cycling, walking in the dark, but also go shopping, parking, hiking, outdoor sports during the daytime Soft,Comfortable and Size Adjustable band, The band is soft enough to auto fit your wirst, adjustable according to your needs. Which suitable for all kinds of people: kids, old man, woman, youth, adults, young pioneers, seniors, office lady, outdoor sport lovers, night runners and so on 3 modes: Steady, flash, fast flash. Could be choose freely according to your hobbies Made of high quality durable nylon with replacement battery