Never Look Back $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". Never Look Back quantity Add to cart SKU: 182. Categories: Sports, Sympathy - Healing. Related Products Always There When the Chips Are Down $20.00 Thanks for Listening $20.00 Everything is Within Reach $20.00 We all Swim Upstream $20.00