Mini Notecard with envelope (reproduction) Blank inside. All designs are abstract art by Momoko Sudo. Prices include shipping within the States. Volume discount available as a pack. Each notecard comes with an envelope that meets US Postal service size regulations and can be mailed as a first class mail. The envelope size is #4 (3 5/8" x 5 1/8"). The card dimensions are 3.25" wide and 4.75" tall when card is closed, and 6.5" wide and 4.75" tall when open. The main Mini Notecard page.