just breathe $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". just breathe quantity Add to cart SKU: 10057. Categories: Food, Humor, Sympathy - Healing. Related Products Home Home on the Range $20.00 Starve a Cold, Feed a Retreiver $20.00 Light a Candle $20.00 Life is Sweet $20.00