Just hum $20.00 Inside Message Blank Inside Packages of Heartstrings® cards are shrink-wrapped and sold in sets of 10 cards with envelopes. The actual card size is 4 1/4" x 5 1/2". Just hum quantity Add to cart SKU: 6200. Categories: Peace, Pets, Sympathy - Healing. Tags: animal cards, animal greeting cards, art cards, art greeting cards, peace cards, peace greeting cards, sympathy cards, sympathy greeting cards, unique cards, unique greeting cards, unique sympathy cards, unique sympathy greeting cards. Related Products My Beer Has a Tear $20.00 Ride it Out $20.00 A Flower and a Prayer $20.00 Always There When the Chips Are Down $20.00