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. its inspiration from modern material designs and ancient buttressing principles, ATR is a three dimensional multilayered knit polymer that is both forgiving and supportive. Comparing 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. In addition, ATR is water, spill, and stain resistant, meaning your chair will continue to look good as new for years to come. When you feel the ATR difference you will wonder how you ever were satisfied with traditional two dimensional knit or mesh fabrics.