All Terrain Self Propelled Wheelchair This Wheelchair is capable of tackling any outdoor terrain, including cobbles, mud, and gravel. It can also be used on snow or grass. This kind of wheelchair can also be used indoors. The self-propelled design of this chair allows users to set their own speed, https://www.mymobilityscooters.uk/products/mobiclinic-torre-lightweight-manual-self-propelled-wheelchair