LED bracelets come with batteries in it. Kids can wear it on your wrists, ankles, backpack or shirts. If you are an adult, please consider the size and we recommend you wear it on your wrist without gloves.The entire illumination portion on the band can be removed from the fabric sleeve making it easy to clean/wash as necessary.Nicely visible while walking, riding, running, or on a motorcycle at night. Secure enough that you don't have to worry about it flying off at higher rates of speed. Also perfect for dog collar when night walking. Great party supplies. Enough for you to share with your families and friends. Kids always love these light up wristbands.