Cardboard, PP plastic;Help reduce paper use with this portable and reusable dry erase spiral bound notebook – great for everything from brainstorming to coaching your local pee wee football team; Includes 8 available whiteboard surface panels; Includes elastic pen slot and PP Plastic dry erase marker with black ink; To clean dry erase pages wipe with dry cloth Note only dry erase/whiteboard markers (such as the one included) are designed for wipe and reuse of sheets; Product Size: 7.75" w x 10.5" h x 0.4" d;