Dimension: 20.5 x 14.5 x 4.75 cm The forever calendar can be used for a lifetime, as the dates and the months can be changed by just sliding the wooden part which is on the calendar. This perpetual wood calendar wood makes a great accent piece on your work desk. This calendar is the perfect addition to any home! Perfect for teaching your child(ren) the days of the week, seasons, years, yesterday, today, and tomorrow. The perpetual calendar is not painted but can easily be decorated by you and your child(ren)! Our perpetual calendar is the perfect addition to your home or a gift to give.