Independence $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". Independence quantity Add to cart SKU: 1138. Categories: Humor, Misc Occasions. Related Products Whine Bottles $20.00 Celebrate Something Every Day $20.00 Working My Tail Off $20.00 This Too Shall Pass $20.00