You Have Learned to Make Friends $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". You Have Learned to Make Friends quantity Add to cart SKU: 254. Categories: Baby - Parenting, Cycling, Sports. Tags: baby, baby cards, baby greeting cards, baby greetings, bike, bike cards, bike christmas cards, bike greeting cards, bike holiday cards, cycling, cycling cards, cycling christmas cards, cycling greeting cards, cycling holiday cards, family cards, family greeting cards, family greetings, parenting cards, parenting greeting cards, parenting greetings, sports, sports cards, sports greeting cards, sports holiday cards. Related Products Baby with bike trailer $20.00 Mind over motor $20.00 A Big Addition $20.00 A New Pea $20.00