You will never forget a birthday or anniversary again with our birthday calendar. Sign is 40cm by 12cm & is made of 3mm birch plywood. Each sign comes with a min of 30 3cm discs & enough jump rings to attach to your birthday sign. If you don't need the full amount you will be given them as spares. You can choose between circle or hearts for your discs. If you have chosen the custom design please use the box provided to describe roughly what you after & leave a number to be contacted on for a preview. Family Birthday Calendars