Eliminate upper-back, shoulder and neck pain by adding this headrest to your Aeron chair. This headrest was specifically created to offer neck support while sitting in your Aeron chair. This ergonomic accessory is a must for every avid Aeron owner. New Model is a huge step forward offering new features requested by our customers, incl. forward-back adjustment, lock into position and a tougher, high quality built. Easy 1-minute installation! (tool included) Important Notes: Made to fit the Herman-Miller Aeron chair ONLY. Color may not match every model perfectly. (Shown on Graphite chair). This headrest is NOT made by Herman Miller. "Hassle-Free" Box contains: 1 Headrest unit, 1 hex-key tool, Assembly Instructions. This Headrest is not manufactured by Herman Miller. "Herman Miller" and "Aeron" are registered trademarks of Herman Miller, Inc.