Laser Tag Birthday Thank You CardsLaser Tag thank you cards feature glowing thank you and laser beams crisscrossing in the background. Great for saying thank you after a laser tag birthday party. Some features of our thank you cards: Professionally printed on 80# cardstock paper so you feel the quality. Teaches children how to send a meaningful handwritten note Easy to use because all you have to do is simply fill in and mail out 10 cards and 10 white envelopes included 4. 5" X 5.