CubeEdge 02 is now on kickstarter, kick here to back us.
The cover is made of durable Kraft board (350g).The pen compartment is the extension of the Kraft cover, so you won’t see any extra structure. When you don’t need the pen compartment, it collapses down to save space.By pushing the side of the spine, an oblong-shape pen compartment forms immediately and a pen can be safely kept in..By easy trimming, the pen compartment fits all kinds of clip pens.120gsm woodfree paper has a good performance for ink or pencil.350gsm Kraft board cover ensures the durability of CubeEdge in many environments.