The Invacare ProSPIN X4 Ultralight Manual Wheelchair combines the look, feel and performance of a rigid wheelchair with the portability and convenience of a folding chair. This modern take on a convenient folding frame features a side frame that minimizes connections for a stronger frame, multiple seat-to-floor heights, and wheel locks that can switch from push-to-lock to pull-to-lock. A heavy-duty option means the ProSPIN X4 can accommodate consumers weighing up to 350 lbs.