These stylish, versatile cards are a perfect addition to your mailing supplies Folded cards are perfect for sending an event invitation, offering plenty of blank space inside the card for personalized messages. Made of 80-lb paper. Peel-and-press seal provides secure closure. LUX Folded Cards, A9, 5 1/2in. x 8 1/2in., Sunflower Yellow, Pack Of 50 is one of many available through Office Depot. Made by LUX.