The Drive Poly-Fly Wheelchair/Transport Chair Combo acts as both a standard wheelchair and a transport chair. Transport chairs need to be pushed be a partner or caregiver, while standard wheelchairs can be self-propelled by the user. To convert the Drive Poly-Fly Chair, simply push the quick-release axles and the 24" wheels can be easily removed. The wheelchair then becomes a transport chair with 8" wheels. In addition to this fantastic feature, this wheelchair also has dual brakes, removable armrests, a fold-down backrest, and swing-away footrests. The Drive Poly-Fly Wheelchair is extremely versatile and combines many sought after features into one portable, high-quality chair.