The tried and tested seat units permit a range of options for individual adaptation and ensure optimum support for a variety of clinical indications. They can be adjusted in height and width as well as back height to match the child's body size as precisely as possible. A variety of pad and fixation systems are also available for different positioning needs. The Inline mobility base can also be equipped with an oxygen unit or transport case in place of the second seat unit. The key feature of the twin buggy is a continuously adjustable frame length. This means that the distance between the seat units can be easily adjusted to the children's body size. The seat adapters can be infinitely tilted in both directions. The Kimba seat units can also be mounted in reverse so that parents can keep their eyes on the children at all times. The foot rest can also be adjusted for height and knee angle.