Gateway deluxe tracing vellum is a premium quality, naturally translucent papers. Our new improved formulation is a 30-Percent post-consumer waste recycled sheet and is neutral pH, lignin free, chemical free and FSC certified. This extremely dense, nonporous sheet is excellent for use with markers, pen and ink and pencil. Heavyweight, 68# (115 grams per square meter). Comes in a 36-Inch by 5 yard roll.