Once in a while, I dig in my heels $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". Once in a while, I dig in my heels quantity Add to cart SKU: 848. Category: Gardening. Related Products Where the Heart Goes, Flowers Grow $20.00 We Grow Together $20.00 It’s not Which Way We Face $20.00 We Sing in Circles $20.00