Jack Richeson Ape Binding Transparent Medium Weight Tracing Paper Pad (Pack of 50), 19 x 24 25 lb. Acid Free 50 Sheets 19 x 24 Extremely Transparent And Very Durable Excellent For Doing Overlays, Sketches, And Drawings In The Classroom Or Studio. Perfect For Use With Pencil, Crayon, Pen, Or Marker Perfect For Use With Pencil, Crayon, Pen, Or Marker