High Hopes $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". High Hopes quantity Add to cart SKU: 284. Categories: Baby - Parenting, Christmas - Holiday, Friendship & Support, Sympathy - Healing. Related Products Acute Pain $20.00 Give Peas a Chance $20.00 Share an Umbrella $20.00 Speak Love, Sing Faith $20.00