SoftWheel -- The Mobility Project

The SoftWheel suspension system for manual wheelchairs comprises three shock absorbers located inside the wheel.
Translates into a rigid ride on flat surfaces for maximum stability, and compression to absorb impact on bumpy terrains for a cush-to travel easily over curbs, cobblestones and other rough surfaces without suffering major impact to their spines and backs.
Available in magnesium or aluminum models and are constructed as single-piece, rigid forms for added strength.