Versatile platform adjusts in height to 12-3/4", tilts positive/negative 15 degrees and rotates 360 degrees for individual customization. Longer keyboard platform arm (9-1/2") and 21" track length are designed for use in sit/stand and corner workstations. Dual mouse platforms swivel left and right, tilts positive and negative 15 degrees and adjusts 2-1/2" in height. Platform slides back under a desk and requires approximately a 14" width. The platform sits about 2" to 3" below the mounting bracket when it is retracted. The mouse trays flip in under the platform when not in use. Platform includes a wrist rest with microfibre shell. Microfiber cloth wrist rest wicks away moisture and dirt, keeping it soft and comfortable.