Code: /B Designed, sold and supported by Twelve South, a small family business in Charleston, South Carolina. HiRise aligns your MacBook or laptop with an external display for the maximum dual-screen configuration. Anti-slip armrests to support and protect all sizes of MacBook or laptops. The rear piston easily adjusts the height of your MacBook or Portable up to 6 inches for an impeccable ergonomics. Maintaining the exposed base improves airflow and cooling, which allows more silent performance. Made of aluminum for a resilient posture, and a position easy to grab.