All Terrain Self Propelled Wheelchair This Wheelchair can handle any outdoor terrain, such as cobbles, mud and gravel. It can also be used on grass or snow. This kind of wheelchair is also suitable for indoor use. The chair is self-propelled, allowing the user to control their own speed. This https://www.mymobilityscooters.uk/products/drive-devilbiss-sd2-self-propelled-wheelchair-22-seat-width