This bracelet is made of nylon, TPU and steel. It is a new design funny bracelet with light, just slap it on your wrist to form a bracelet. You can wear the led bracelet on your wrists, then just press the button and enjoy your party time. The LED bracelets with 3 different modes, fast blink, slow blink and full glow. It has high visibility, very suitable for sports, concerts, festivals at night. The size fits most people to wear, enough for you to share with your families and friends, kids always love these light up wristbands. 9 4/5" L x 1 9/16" W