Features: The flashing LED rings are applied for putting on attractive light shows for friends or applied as bright Halloween costume accessories. Waterproof, reliable and lightweight material is suitable for your long-term use. Simply press gently and the soft rubber rings will start flashing. Batteries are already included and are non-replaceable or rechargeable. Can loop them in your laces and light up teen's running shoes for fun and visibility. Captivate the audience with flickering finger lights at a club, rave, Halloween party, birthday, disco, and a school dance. Specifications: Material: soft rubber Features: light up, flashing led ring Color: red, yellow, green, blue, pink, purple (random color mixing) Package includes: 300 x Light up rings Warm note: The color may have different as the difference display, please understand. Please allow 1 - 2 cm error due to manual measurement. Batteries are already included and are non-replaceable or rechargeable.