Eight card set: two each of four different designs A2 size 4.25x5.5 Inches folded with blank Interior #110 100% recycled paper with kraft brown envelope Supporting sustainability: 100% recycled post-consumer waste cards and envelope; recycled kraft brown box. Great for people who love birds, animals, and nature! My cards are for curious people who seek a little something extra from the universe. You'll find my discoveries and stories on the back of each card (nature, science, history, creativity, and more). See photos for card text. It's a little something extra for people who like getting more from their purchases! These cards are summer-themed and blank inside. Good for everyday and special occasions. And of course, great for bird and nature lovers, too!