Clearprint vellum field books are made with 100% archival cotton. Uniquely transparent, these books also feature a customizable heavy vellum cover and a pull out slip sheet which can be used as an opaque backing to any work in-progress. Pages can be pulled out neatly with virtually no damage to the inside edge. Available in Fade-Out 4x4 gridded non-repro and plain, unprinted versions. These 16# sketch books are durable, translucent, and archival making them a unique substrate for drawing, painting, and mixed media art applications. Clearprint 1000H vellum sketchbooks are designed and made in the USA.