Thank your guests for celebrating by sending tennis rackets with tennis ball thank you cards. Each You Got Served - Tennis shaped thank you note cards are printed double-sided on sturdy card stock paper. These fun thank you cards feature our You Got Served - Tennis theme and have plenty of space to write a special note of thanks. Each set of 12 shaped thank you note cards includes 12 white envelopes making it easy to send a special thank you by mail.