The Karst 5.5" x 8.5" Stone Bound Notebook is made for creatives by creatives. Featuring a water-resistant hard cover and pages, ribbon page marker and back document pocket. The smooth texture of the 72 sheets of white stone lined pages and flat-lay binding provide ample comfort and writing space for your notes and ideas. This stone paper holds a C2C Cradle to Cradle Silver Certification. That means if you do have to dispose of your Karst notebook; it is recyclable. Due to the nature of the material, there may be color variances on the cover.