Cowboy Greetings $20.00 Inside Message Inside: Blank 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". Cowboy Greetings quantity Add to cart SKU: 1166. Categories: Christmas - Holiday, Cowboy. Related Products Fat, Tired and Merry $20.00 Christmas Cat $20.00 Vitamin XC $20.00 Across the Miles $20.00