This ergonomic keyboard tray is shaped with a natural wave design to fit ergonomic keyboards such as Microsoft Natural, Natural Elite and Natural Pro keyboards. The 1/4" thin phenolic tray allows complete knee clearance and includes a retractable mouse tray for efficient use of space. The mouse tray mounts on either the left or right side and includes independent tilt and swivel functioning for infinite adjustment. A gel wrist pad for mousing completes your ergonomic comfort.Ergonomic keyboards are designed to accommodate the most comfortable, stress-free typing position for your hands. For complete ergonomic adjustability, pair this keyboard mouse tray with an articulating keyboard arm mechanism. Our articulating arms offer height, depth, tilt and swivel adjustments so you can customize the position and angle of your keyboard tray according to your typing posture. Choose from one of the arms below to create a complete adjustable ergonomic keyboard tray system.