A2 size 4.25x5.5 Inches folded with blank Interior #110 100% recycled paper with kraft brown envelope Recyclable or commercially compostable plastic sleeve Gathering seeds and twigs between for the fall season are the chickadee, bluejay, junco, cardinal and crow. Created for curious people and nature lovers, each card includes my discoveries about science, history, and self-discovery on the back of the card (see photo for card text).