Ergohuman High Back Executive Chair with a built-in headrest is engineered with your total comfort in mind. Aesthetics, form and function are merged seamlessly in a single design with adjustable features to achieve ergonomic fine-tuning. Tilt-tension control with tilt lock allows you to adjust the recline rate based on your weight. Back-angle adjustment sets the back angle for personalized comfort in a reclined position. Synchro-tilt allows the back to recline in a preset ratio to the seat. Seat-height adjustment lets you set the height to the desired position relative to the floor. Waterfall seat slopes to reduce pressure on the back of your knees for extra comfort. Back-height adjustment allows the backrest to easily adjust relative to the seat for personalized lumbar region support and comfort. Arms are both depth-adjustable and height-adjustable for proper ergonomic positioning.