Roll-Up-Chair has a special two layer seat that supports uniformly over its entire surface.  The top layer's fabric grain is oriented to provide maximum support around the edge of the seat and the bottom layer's fabric is oriented to support diagonally across the middle of the seat.  Together, the two layers give excellent support over the entire seat without the soft and sagging center of most other camp chairs.  Pressure from your body on the seat is transferred through the arm straps to the fabric back support where your back is suspended away from all rigid back support tubes like that of a hammock.  The combination of a two-ply seat and a suspended back support makes Roll-a-Chair incredibly comfortable.  Weighs only 2.6 lbs and folds into the smallest size of any full size chair.  Carries effortlessly by its own built-in shoulder strap.  Set-up size- 30" high x 19" square seat, folded size- 26.5" x 4" dia, capacity 250 lbs.