What is a Desk Extension Elbow Pad Armrest used for? While working at a large display computer on a narrow desk, it helps alleviate eye fatigue by lengthening the distance from the screen to your body. For long hours of using computer, it supports your cantilever elbows as a desk extender, relieving the pressure and tension on wrists and forearms and making keyboard typing relaxed. In addition, no stressful friction between forearms and the desk helps keep both of them clean. Features of this Patu Product Easy to use - Portable and installed simply. Unscrew to attach to desks, adjustable to desks up to 2.2 inches thick. High quality - Durable aluminum alloy brackets stretchable to 12 inches, strong plastic pad with soft surface cushion upon, supporting up to 24 lbs and relieving 90% of the weight undertaken by your elbows. Ergonomically Designed - Moved freely with both right hand and left hand, offering an enough wide range of motion to adjust for any sitting posture. Health Care - Alleviate strain and pain of eyes, shoulders, wrists, and neck areas caused by long-term use of computer and long hours staring at the screen, helping prevent carpal tunnel syndrome from developing. Particularly developed for heavy computer users, such as IT professionals, designers, office employees and etc. Difference between Lift Adjustable Style and Normal Style For Lift Adjustable Style: Adjustable vertically higher than the desk to comfort elbows in different postures. For Normal Style: Not adjustable in height, the elbow pad after installed is as high as the top of the desk. Adjust the armrests in adapt to the most comfortable posture before use. Be kind of yourself and order yours now!