Very bright in the dark u0026 nighttime activities, great reflective christmas safety gear arm wrist ankle bands lights for walking, running, cycling, jogging at night. Perfect running reflectors lights and party favors for runners, walkers, cyclists, kids, children, men, women, adults, Keep you be seen u0026 be safe at night for you, your children or your pets, that means greater safety for you, your children or your pet from negligent and distracted drive. Christmas Party Favors Supplies for Kids Men Women - Best For LED Parties, Kids Birthdays, Festivals, Christmas, Weddings, Night Activities, Bonfires, Disco, Carnivals, celebrations, Indoor u0026 Outdoor Activities, Rave Party Favors u0026 More. Both kids u0026 adults can wear these led light up toys u0026 these led slap bracelets can be worn at any cheerful occasions, the light up bracelets for kids are bright enough to attract children sight u0026 easily catch others attention in the crowd. length: 13.8 inches, width: 1.6 inches, comfortable on both adults u0026 children, kids, men u0026 women, or share with your friend or families, by simply slap wrap it to different position, such as wrist, ankle, and arm, it will curl wrap automatically. If you want to use it around the biceps, please consider the dimension to see if it can fit on. button cell batteries, which can work for about 50-70 hours. When the battery is exhausted, you can replace it with a new one. NOT A ONE TIME USE. Three flashing mode - fast flash, slow flash, and full illumination.