Never wait $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". Never wait quantity Add to cart SKU: 957. Category: Sports. Related Products It’s More than the shoes $20.00 This Too Shall Pass $20.00 A chance to dance $20.00 Sweet Rolls $20.00