Sit-Stand Desktop Writing Slope Podium Easily adjusts from 3" to 18" high for sitting or standing work. 12 adjustment angles promote good posture and enhance comfort when reading and writing. Hand-crafted from durable hardwood ply. Non-glare, low-contrast polyurethane finish. Thick, centered bottom ledge holds heavy books and binders. The center of the ledge (about a 10" length) extends out 3/4" to support thick books. The ledge tapers down on the sides so as not to interfere with your arms when writing. Sets up in seconds. Folds flat for storage.