Thanks to a titanium heart and a rubber soul $20.00 Inside Message Inside Message: riding through life 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". Thanks to a titanium heart and a rubber soul quantity Add to cart SKU: rubber-soul. Categories: Cycling, Hearts, Sports. Tags: bike, bike cards, bike greeting cards, bike holiday cards, cards, christmas cards, cycling, cycling cards, cycling christmas, cycling greeting cards, cycling holiday cards, sports, sports cards, sports greeting cards. Related Products Squeeze the Day $20.00 Starve a Cold, Feed a Retreiver $20.00 My Heart Goes Out $20.00 In Deep $20.00