1st Birthday Boy - Fun to be One - First Birthday Party Thank You Cards - Set of 24 1st Birthday Boy Thank You Note Card Set INCLUDES 24 first birthday party thank yous and premium white envelopes. These Fun to be One thank you notes are perfect for a birthday party. 1st Birthday Boy party note cards SIZE 5.5 inches by 3.75 inches, folded. The included envelopes measure 5.75 inches by 3.75 inches. The inside of each 1st Birthday Boy thank you card stationery has a fun graphic as well as space to write a special note to friends and family. PREMIUM THANK YOU CARDS: 1st Birthday Boy party thank you cards are professionally printed on heavy-duty cardstock paper with a photo-like shine. They are then hand-folded and individually inspected, then carefully packaged with our exclusive squiggle flap envelopes, making this stationary set a must-have for birthday parties. MADE IN THE USA: 1st Birthday Boy - Birthday Party Thank You Cards are designed and manufactured at our Wisconsin facility using materials that are Made in the USA. 1st Birthday Boy thank you cards use a No-Mess Glitter Print: Our thank you cards are designed with a printed image of glitter, eliminating glitter flake while maximizing bling effect!