Dynamic Variable Lumbar Support: The  DVL support system automatically adjusts itself to the operator, thus making it possible to ensure all day support without the need for constant chair tweaking. Height Adjustable Split-Wing Design:  The  chair provides support in ways you never thought possible. The innovative split back design cradles the user's upper back allowing for more support when leaning side to side. The height adjustment capabilities ensure comfort at any position.  SciFloat Infinite Recline:  Floating recline technology helps the user stay in motion throughout the day. This cutting edge ergonomic chair feature improves circulation, concentration and energy levels.  4-Way Adjustable Armrests:  No one keeps their arms in the same position all day at work. The XG Wing Chair is ready to move with you. The armrests of thechair eaily adjust by height, depth, width and angle.  Adjustable Backrest Height:  The Chair basic backrest height can be adjusted by the user to ensure full support. From the lumbar curve to the neck, the adjustable back rest can be positioned to meet the operators specific needs. Adjustable Headrest: The XG Wing Chair is available with an innovative headrest that features adjustable height and angle. No matter the position you sit in, the XG wing headrest can pivot with the user to ensure comfort. K-Sport Advanced Performance Material: Flex mesh technology provides a soft and adaptive feel. The XG chair allows users to experience the breathable conforming performance provided by cutting edge ergonomic technology that prevents overheating. The advanced K-Sport material features a tighter weave than traditional mesh office chairs. Optional X-Blade Casters: X-Wheel Blade Casters represent a breakthrough in seating technology and comfort. The wheels on your chair are the foundation that creates core stability and leads to healthy, smooth, ergonomic movement. X-Chair blade casters feature 100% rubberized wheels and a free ball-bearing core, X-Wheel Blade Casters are quieter and smoother. These upgraded X-Chair wheels work better on hardwood and pile carpet alike. They are more gentle on tile, hardwood, vinyl, carpet, and almost any surface. Ball-bearing swivels spin easily, preventing scuffing and scratching. Optional Footrest: The Under Desk Footrest encourages continuous movement and good posture throughout the work day. This ergonomic footrest is placed on, not screwed onto, its polished aluminum frame so that the surface of the footrest can move with you throughout the day. It slides easily across the frame so you can change the angle of your feet as many times as you like. This helps keep your legs in motion even when you sit for long periods, and makes it easy to find a comfortable position. In addition to keeping your legs comfortable, lifting your feet even slightly helps tip your pelvis backward so you sit further back in your seat where you can feel the full effect of your chair’s lumbar support. The Under Desk Footrest helps you maximize the ergonomic benefits of the X-Chair.