The size of each sheet is 117x171 mm or 4.6 x 6.7 inches. Each box is 44 mm or 1.7 inches wide. The height of each box is 38,6/44,6/50,6 mm or 1.5/1.7/2.0 inches, depending of the number of weeks in the month 4/5/6.
These stickers are handmade on thin matte sticker paper. Though not water proof, they can take a light layer of watercolour or similar. You can write on and stamp the stickers. Please allow for tiny imperfections and note that colours may vary from each screen.