The 60-lb white drawing paper used in the sketch pad is perfect for sketches, drawings or scribbles. It is adaptive for most media, including ink, marker, crayon and pencil. The wire bound sheets keep pages neat. The back is made from heavy-duty 50 pt chipboard. Pocket-Sized Indicator: N; Pad-Binding Type: Spiral Coil; Pad-Binding Edge: Top; Number of Subjects/Sections: 1.