It’s beginning to sink in $20.00 Inside Message Inside: that I miss you 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". It's beginning to sink in quantity Add to cart SKU: 863. Category: Hearts. Related Products Thanks for Your Strength $20.00 Chocolate for My Bud $20.00 My Heart Bleats $20.00 I Love You from the Bottom of My Heart $20.00