The 50# white drawing paper used in the sketch book is perfect for sketches, drawings or scribbles. It is adaptive for most media, including ink, marker, crayon and pencil. The sheets are 28cm x 22cm , and wirebound with a printed cover and 50 pt chipboard back. The wire is split twin wire, which allows for extra "lay-flat" when drawing. There are 100 sheets in each book. The printed cover features a "Rembrandt" graphic, and has a built-in storage pocket for loose sheets. Proudly made in USA!