【Ergonomic 】With padded pillow and Reinforced framework mesh back support, alongside a high back design, greater support and comfort is provided for the user, while they work reducing muscle fatigue and pressure. 【Air Ventilation】 The Smugdesk office chair is incredibly breathable with its mesh construction and high density foam seat, increasing air circulation. The seat uses Nanoscale materials that can resist transformation with high Density shaping Foam and abrasion to keep you comfortable during long, intense sessions. 【Adjustability】This computer chair features a sliceable headrest, comfort is customized to the user entirely, fitting the necks curve perfectly, making it great for relaxing during your busy working days. To alter the height and tilt simply adjust the tilt lock mechanism lever underneath the seat.