Usage Tips:FULL SET - Invite your friends, invite your family you will receive 24 pcs flash light up cups (The cup capacity is 2 ounces), adequate for entertaining guests when holding a party or for family gathering; good times will be shared by all Reliable material: the light up cups use acrylic material instead of glass, stronger, durable and not easy to break; Transparent color makes the cups clearly show the flashing colors when switching on the button. Colorful LED lamp: the fun drinking glass comes with an on/ off switch, which uses for colorful LED lamp so you can see a variety of lights flashing alternately when turning on the switch; 3 Button cells are installed at the bottom of the cup, energy-saving, high-efficient with long service life Add fun ambiance: these flashing light cups will bring you surprising visual appeal when you shut off the light in the room or party; PARTY TIME - Whatever the occasion, these tumblers Light up your birthday party, wedding, nightclub, holiday parties, weddings, sporting events, festivals, night events, bars, etc., Bring them to music festivals, concerts, or sporting events. Youll definitely stand ou Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.