Light up Beer Mugs are great for nighttime events! These flashing mugs are fun when having friends and family over for get-togethers. Make them a part of your nightlife, and let the good times roll! They have an On/Off switch located at the bottom of the mug that activates the glass. Once activated, the glass will begin to show off its 6 bright flashing LEDs. This glass is perfect for a night out on the town, or in the comfort of your own home so get yours today!