Acknowledge Mom's neverending support with our Mom Book Stack Mother's Day Greeting Card. Designed with bookish charm, this card is a thoughtful way to say thanks and wish a book-loving mom a happy and relaxing Mother's Day. • Size: A2, 4.25 x 5.5" •Features: Blank interior and coordinating envelope • Sentiment: Mom, thanks for being my cheerleader, therapist, best friend