4.25" x 5.5" standard size card, will fit in a standard size envelope. Envelope is not included. Simplistic treeline stamp with green and black ink on 120lb white cardstock, won't bleed through when written on with ink! Can use the card by itself or add your own stamp text in the middle, middle of card is blank. Please note that this is a handmade item and the ink treeline will vary on each card.