We Sing in Circles $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". We Sing in Circles quantity Add to cart SKU: 762. Categories: Gardening, Sympathy - Healing. Related Products Paws in the Flowers $20.00 Hose/Snake $20.00 If Fences Were Flowers $20.00 I Only Have Irises for You $20.00