yellowish white, wood-free paper, matte, acid-free, 80 g/m², two pockets made of semi-matte paper, thread binding, cover made of cardboard printed on one side, ca. 350 g/m², closure consist of cardboard button and a string
O-Check Design is the name of a small, South Korean company that produces a range of different stationery products. The sketchpads or sketchbooks and pads and calendars do not all have the same design features but instead have different covers with what are similar patterns and colours that all fit to one another. The String booklets come in two sizes each with its own colour and contain, in addition to blank pages, two pockets made of heavy paper. The cardboard cover can be closed up by means of a button around which a string can be wound.