The Engineered Now Headrest For The Herman Miller Aeron Chair headrest only Posted on January 16, 2024 by admin [MATCHES CLASSIC AERON CHAIR MODELS YEAR 2016 OR NEWER]. EXPERIENCE THE ULTIMATE UPGRADE TO YOUR HERMAN MILLER AERON – The H3 ENjoy is our standard size headrest designed to provide you with the neck support the Aeron Chairs are missing.