Rock Star $20.00 Inside Message Blank 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". Rock Star quantity Add to cart Categories: Friendship & Support, Peace, Sports. Tags: art cards, art greeting cards, artistic greeting cards, blank cards, friendship cards, friendship greeting cards, peace cards, peace greeting cards, sports, sports cards, sports greeting cards, unique cards, unique greeting cards. Related Products Beyond Words $20.00 High Hopes $20.00 Friends are the Fiber $20.00 Everything is Within Reach $20.00