Freedom Chair by Humanscale - Headrest, Adv. Arms, Black Leather on Titanium Freedom's dynamic, position sensitive headrest adjusts to cradle your head and neck as your recline, and moves out of the way when you sit upright automatically. As you recline, you'll maintain a near consisten eye level, while the angle between your torso and legs opens up for better body function. The pivoting backrest automatically adapts to the changing needs of your spine during recline. With Freedom's revolutionary counter-balance mechanism, your weight automatically balances the force required to recline the chair. So whether you're big or small, short or tall, the recline tension is always perfectly adjusted to let you move while keeping you fully supported in all positions.