Behind the name O-Check Design is a South Korean firm which produces a variety of paper products. The sketchbooks, blocks, writing tablets, notebooks and calendars often display a similarity of layout or design but are never actually identical. This results in their affiliation not always being apparent. But there is an identifiable correlation among them consisting of a recognizably timeless kind of styling. The notebooks have different covers with designs in harmonious colours and inside of them you will find high quality, ruled paper, which means they are primarily suitable for writing. The booklets can not only be used for all possible purposes but can also satisfy the gamut of tastes.