Amp up the atmosphere of almost any occasion with the KOVOT Set of 8 LED Party Tumblers. This set includes (8) hard acrylic plastic led tumblers which feature 3 light up modes: slow blink, running flash, and all on. They will make a great addition to holiday parties, birthdays, weddings, sporting events, festivals, indoor or night events. Made of food grade BPA free plastic. Hand wash only. Detach the bottom before washing. Filament in bottom chamber is non-toxic and is there for optimum flashing performance.