Paws in the Flowers $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". Paws in the Flowers quantity Add to cart SKU: 314. Categories: Gardening, Pets, Sympathy - Healing. Related Products Plant Peace $20.00 We Grow Together $20.00 Flowers Chase the Blues $20.00 Flower Letter $20.00