Read Between the Pines $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". Read Between the Pines quantity Add to cart SKU: 552. Category: Sports. Related Products A chance to dance $20.00 Across the Miles $20.00 Oh What Fun It Is to Ride $20.00 Each of Us Makes a Ripple $20.00