The World is at Your Feet $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". The World is at Your Feet quantity Add to cart SKU: 305. Category: Friendship & Support. Related Products Close Knit Friends $20.00 The Past is Gone $20.00 May You Always have Tailwinds $20.00 Share an Umbrella $20.00