Sun, Water and Friends $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". Sun, Water and Friends quantity Add to cart SKU: 1035. Category: Friendship & Support. Related Products A Friend is Like a Quilt $20.00 The World is at Your Feet $20.00 Haven’t Seen You in Many Moons $20.00 You Will Never Fly $20.00