Cold Hands, Warm Heart $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". Cold Hands, Warm Heart quantity Add to cart SKU: 612. Categories: Christmas - Holiday, Hearts. Related Products My Heart Goes Out $20.00 All I See Is You $20.00 I Only Have Irises for You $20.00 The Common Rope of Hope $20.00