Champagne $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". Champagne quantity Add to cart SKU: 35. Category: Hearts. Related Products My Heart Goes Out $20.00 I Love You from the Bottom of My Heart $20.00 We Grow Together $20.00 Chocolate for My Bud $20.00