Light Up Your St. Patrick*s Night. Light up your St. Patrick*s Day gathering with Flashing Shamrock Glasses. You will be the life of the party wearing these shamrock light up glasses. These flashy St. Patty*s Day glasses are perfect to wear to parties- bars- or any Irish gathering. Wear a pair of these light up glasses for a fabulous accessory everyone will be talking about! On and off function with 3 flashing options. Bright green flashing lights when on. One size fits most. Shamrocks are approximately 7 x 3 1/4. Temples are approximately 5 1/4 long. Batteries included. Made of plastic.