Always worried about the notebook is prone to bended? Delfonics Rollbahn notebook cover will be your good partner. Used of transparent PVC material, the notebook can maintain a clear cover color and provide more anti-fouling and anti-bended features. The inside of the notebook cover is a storage layer for easy carrying receipt or memos. It is available in B6 and A5 sizes. It is recommended for use with Delfinics Rollbahn notebooks.