Olorful LED Glowing Beer Cup Induction Flashing Wine Glass Party Bar Drink Cup Features: for men, women, adults and children, each tumbler is made from, food safe acrylic. Easy to clean, just hand-wash and allow to dry. From weddings to birthdays to Year’s holiday parties, adds an extra of to any special occasion! Each lights up when liquid is present and turns off when empty. Works with any drink. Two batteries are included with each cup. Give your guests a. Make memories that last with a gift that your will cherish. Available as singles, and sets of 4 or 8 tumblers. Whether you need to spice up a birthday party, anniversary, Halloween, Thanksgiving, Christmas, Years or holiday party, Up are the choice. for kids and adults, these glasses light up, change colors and flash whenever any is present in the cup Product Description: Package includes:1pc luminous cup sensor cup