1,size of the chalk notebook:30*20cm. 2,function:written with chalk. ... :250g whiteboard paperavailable accessories:chalk and erasersize of the notebook:30*20cminner pages:6 or 8Detail information of ... goods:1,which is chalk notebook,basic material is special 250g whiteboard paper,then ... ,because it is not used again;but our notebook is different from it,which can be used ...