The Mind is the Ocean $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 Mind is the Ocean quantity Add to cart SKU: 224. Category: Sympathy - Healing. Related Products My Heart Goes Out $20.00 Speak Love, Sing Faith $20.00 Flowers Chase the Blues $20.00 Never Look Back $20.00