Brighten up your festivities with our 16 oz. LED Blue String Light Double Wall Cup! This clear plastic cup features a dazzling string of blue LEDs between its double walls, offering three light modes: slow flash, fast flash, and steady on. Complete with a lid and straw for convenience, it's ideal for serving signature drinks at bars and themed events such as July 4th, Hanukkah, sporting events, and more. Each cup comes with 3 AG13 batteries installed and replaceable. Sold individually, please order by the cup. Reusable and hand washable. Note: Scratches and hairline cracks in LED acrylic cups are normal and not considered defective.