Nature bamboo desk perpetual calendar features 100% bamboo blocks on a bamboo stand. It is so fun to change the blocks every day. Measurement: 5.5 x 1.8 x 1.4 inches. Each block measures 1.2 x 1.2 x 1.2 inches. It does not take up too much space on the desktop or on the shelf. Great for home, desks, teacher's offices, and classrooms, it keeps track of the date year after year and makes a great Christmas gift for kids and adults. The set comes with 2-day blocks, 1-week block, 1-month block, and 1 holder. Each item is individually handmade, it may be slightly flawed and imperfect, please allow it.