Breck epitomizes effortless sitting. A weight-activated mechanism responds to your body to balance your comfort, so all you have to do is have a seat. The back is made with GeoStretch™ technology that features the optimal ratio of back suspension for ergonomic support, smoothly transitioning from your upper back to lower back to prevent pressure point triggers. Designed with information from 5.5 billion data points, Breck has decades of research behind it. Simply put, it's the most ergonomic office chair you'll find at this price. 2 chairs available Responsive, weight-activated recline with 3-position backstop Standard height-adjustable lumbar 4D arms Adjustable seat height Adjustable seat depth Best-in-class low carbon footprint Hard casters GeoStretch™ back strikes the balance between comfort and stability Lightweight design is just 30 lbs., ships flat, and assembles in under a minute with no tools 94% recyclable