Shred, white and blue $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". Shred, white and blue quantity Add to cart SKU: 969. Category: Sports. Related Products Oh What Fun It Is to Ride $20.00 Fat, Tired and Merry $20.00 Run Home $20.00 May the Bumps of Life $20.00