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 Squeeze the Day $20.00 The Beet Grows On $20.00 Each of Us Makes a Ripple $20.00 You Are So Good to Me $20.00