Created with sturdy, acid-free card stock, it ensures it will stay bright and beautiful no matter what you decide to use it for. The inside is blank. I hand-sign each card on the back, and include the illustration name, just like I do for my full-size art prints, making it truly a gift of art. A few fun details about my handmade cards: ~ Handmade ~ A2 sized, 4.25” x 5.5” notecard and kraft envelope ~ Note card is made of high quality, 120 lb Bright White card stock ~ Image is printed with archival quality ink and acid-free paper ~ Each card is signed by the artist (me!) on the back of the card