The purpose of this research study is to evaluate the Endeavor, a compact, forward-folding, ultralight manual wheelchair that incorporates small "swing-down" wheels for navigation in confined areas. This enables access to narrow environments such as those encountered in offices, restrooms, and transportation settings. When using the small access wheels, the wheelchair also fits down the aisle of airplanes and collapses to be stowed in the overhead compartment. It is anticipated that the Endeavor will maximize mobility; increase access to confined areas; and ease the demands of travel for people with disabilities.