Ergonomic keyboard tray tilts, elevates, swivels, and slides out to adjust to a position that's perfect for you Keyboard tray raises from 4.5" below your desk to desk height to match your comfort level Adjustable tension locking lever makes it easy to adjust the keyboard's height and tilt angle as needed Keyboard tray neatly tucks beneath your desk when not in use to keep it out sight Adjustable mouse pad connects to the left or right side of the keyboard tray and independently tilts so you can finetune the position to increase comfort Comes with a bonus mouse pad Assembly required with 2 people