Tree by ski $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". Tree by ski quantity Add to cart SKU: tree-by-ski. Categories: Christmas - Holiday, Skiing. Tags: art card, art greeting card, christmas cards, christmas tree greeting card, holiday cards, ski cards, ski greeting card, sports cards, unique cards, unique greeting cards, winter cards. Related Products Christmas Cat $20.00 Cold Hands, Warm Heart $20.00 Ho Ho Hose $20.00 The Season to Remember Your Roots $20.00