Cards feature colorful designs with positive messages on the front, with room on the uncoated back for a personal note. ǀ 60 cards per set ǀ Full-color designs ǀ Sturdy card stock ǀ Rounded corners ǀ Cards measure 3.25 (8.26 cm) square. Cards to Make Their Day. Brighten school days and encourage young children with adorable lunch box cards! Colorful animal pictures are combined with positive messages on the front of each card, with space on the uncoated back for a parent's personal note.