Super value pack 8 colors LED bracelets come with batteries in it. Plus 8 extra batteries as gift.Ensuring long hours of fun. Easy to useJust press the button and enjoy. 3 modes: fast blink, slow blink & full glow. One of them can flash in different colors. One size fits most 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. Easy to cleanThe entire illumination portion on the band can be removed from the fabric sleeve making it easy to clean/wash as necessary. Multi-UsagesNicely 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.