The Activa Series is designed to be easily maintained and parts replaced efficiently if damaged. Removable seat and backrest pads as well as replaceable lift up arms allow for the high wear and tear areas of the Activa to be addressed without replacing the entire seat. Spare parts of accessories are also available for the entire Activa Series. All Activa Series products come with a hard shell back outer which increases the longevity of the back rest and provides strength from possible damage from the rear.