Introducing X3, the most innovative X-Chair yet. X3 incorporates all of the same design and ergonomics as the X2. However, we are excited to introduce Advanced Tensile Recovery fabric (ATR) throughout the chair to provide enhanced support and comfort. Compared to traditional fabrics, it has more give and spring and as a result, it provides greater contouring on the back and an enhancing layer of comfort on top of the X3's high density molded foam seating surface. ATR is water, spill, and stain resistant, meaning your chair will continue to look good as new for years to come.Advanced Tensile Recovery A.T.R. is a woven multilayered nylon that is both responsive and supportive. A.T.R. is water, spill, and stain resistant. It provides more give and spring than traditional fabricsHigh Resiliency Molded Foam SeatX3 is equipped with a High Resiliency Moulded Foam Seat that offers a traditional feel with added support. Paired with the Advanced Tensile Recovery Fabric seat, and a standard seat slider, the sit on this chair is next to noneAdjustable Backrest Height Adjust X-Chair's backrest height so you're fully supported, from your lumbar curve to your neck. Ensuring you get maximum support where you need it mostDynamic Variable LumbarX-Chair's DVL Support adjusts itself your body when you move. You'll stay relaxed all dayIndependently Adjustable HeadrestX-Chair's innovative headrest features adjustable height and angle. No matter what position you sit in, X-Chair's headrest can pivot to keep you comfy all day4-D ArmrestsX-Chair moves with you. Easily adjust the armrest height, depth, width, and angle as you move throughout the daySciFloat Infinite ReclineFloating recline technology helps your body stay in motion all day. This improves circulation, concentration, energy levels so you can be more productive