Ergonomically designed to provide the user with support for forearms and relief from muscle strain and tension in the neck and shoulders. Designed for office (working at a computer) and industrial use (repetitive or extended periods doing light assembly work). Ideal for the workplace, home office, or for use at any desk or table where you work or do schoolwork or hobbies. Brown rest with black extension arm. The Armrest Cradle is made of gray padded sheepskin leather mounted on a rigid plastic frame and measures 8 long x 4-1/2 wide. It has a concave, or rounded, shape so that it keeps the forearm comfortable and well supported. The rest pivots 360-degrees, allowing you to move it into the ideal position for your maximum comfort. Can be easily adjusted within its 3 vertical range using the built-in metal set screw. The Extension Arm is made of lightweight, sturdy aluminum alloy with white powder coat finish. Maximum extension from desk is approximately 15. . The Clamp is easy to adjust and tighten and will fit on virtually any desk, table or other work surface 5/8 or wider. Maximum capacity: 22 lbs. 2 Year Limited Manufacturer's Warranty Product dimensions (imperial): 15 inch L x 4.5 inch W Product dimensions (metric): 381.00 mm L x 114.30 mm W