SIZE: LED Light Up Jelly Bumpy Rings are flexible and can fit to anyone. LED Rings comes in assorted colors of green, yellow, blue, and two different shades of pink. Batteries are already included and installed inside the LED Rings. "FEATURES: Comes with 3 LEDs (blue, green, and red). To activate, simply press on the ring and it will start flashing. To turn off, press on the ring again. "PERFECT FOR PARTIES: The perfect accessory for any party is now in store. This LED Jelly Bumpy Rings is perfect for different kinds of parties and events such as rave parties, glow in the dark parties, birthday parties, Christmas parties, Halloween parties, concerts, weddings and many more! "INCLUDES: LED Jelly Bumpy Rings is packed in a display box which includes: 24 pieces of LED Rings that comes in Bumpy shape and different colors green, yellow, blue, and 2 different shades of pink. "MANUFACTURING: This LED Bumpy Rings is made from stretchy and jelly material that is safe, non-toxic and environmentally-friendly. Each jelly ring for kids is strong, durable and easy to inflate."