Each card is made of extra-thick stitched cardboard for durability, ensuring multiple and long-lasting use. The Shutter Slide Bingo Cards measure 6.8 inches x 6.7 inches and feature a large font that is easy to read for children and adults. The bingo set contains 5 trays of brightly colored bingo cards in red, orange, blue, purple and green. One of each color. There are red clear shutters above the number that won't obscure the numbers. NOTE: All numbers on the cards of the same color are duplicated, we don't suggest to order more than a pack