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 You are the Rock in My River $20.00 In Deep $20.00 I Love You from the Bottom of My Heart $20.00 Wishing You a Bee-You-Tea-Full Day $20.00