Bee Paper - Gateway Tracing Vellum - 500 sheet package - 9x12 - Bee Paper Gateway Deluxe Tracing Vellum is a premium quality, naturally translucent paper. Aquabee new improved formulation is a 30% PCW recycled sheet; and is neutral pH, lignin free, chemical free, and FSC Certified. Bee Paper Gateway Tracing Vellum is an extremely dense, non-porous sheet, excellent for use with markers, pen and ink and pencil. Inspiring paper values that enhance techniques in every art medium. The Aquabee line of artist papers are among the most widely known in the United States. This Package Includes: 500 Heavyweight, 68 pound (115 gsm).9 x 12 inch Sheets of Gateway Tracing Vellum.