Life is Full of Days to Crow $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". Life is Full of Days to Crow quantity Add to cart SKU: 221. Category: Birthday. Related Products The Wish $20.00 I heard by word of mouse $20.00 Fire Up the Choir $20.00 Never Fear, One More Year $20.00