By eliminating the screws on the back, we achieved a much slimmer and elegant look but also managed to make the chair more stable than the screw-fastened ones. By keeping the slides in the same width with the frame, not only did we make it easier to store it as the chair, when folded, is very slim, but it is also safer as it prevents the fingers from being jammed between the frame tubes. Finally, the unique “U-shaped seat-tube design” economizes time and production cost and still remains stable and safe to use. This cost reduction is reflected in our selling price, so more customers will be able to afford excellent quality for a reasonable price.