The Letter Writing Set box contains 10 sheets of 4 different designs (printed on one side), so 40 sheets in all of A5 writing paper (6" x 8.25"). Included are 40 matching envelopes (20 x 2 designs) and 50 assorted stickers and labels. Sheets, envelopes and stickers can be used in combination or independently. This set is inspired by natural history.