Sweeten the countdown to Christmas with our M&S Choc Marks Advent Calendar. This festive box features 24 classic mini milk and white chocolate bars with caramelised sugar for toffee-like sweetness. From silky smooth to crunchy, you’ll find a surprise treat behind each door. There’s also an extra-special Christmas Day bar made with milk chocolate, pretzel, caramel, sea salt and almond nougat for added indulgence. Enjoy one a day for an exciting, treat-filled lead-up to Christmas. These chocolates are made using responsibly sourced cocoa.