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 New Year’s holiday parties, Light Up Glassware adds an extra of to any special occasion! Each glass 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, New Years or holiday party, So There Light Up tumblers are the choice. for kids and adults, these glasses light up, change colors and flash whenever any liquid is present in the cup Product Description: Package includes:2pcs 3pcs 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 New Year’s holiday parties, Light Up Glassware adds an extra of to any special occasion! Each glass 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, New Years or holiday party, So There Light Up tumblers are the choice. for kids and adults, these glasses light up, change colors and flash whenever any liquid is present in the cup