The present invention relates to a mobility aiding device, such as a walker, a wheelchair, a transport chair, a shower seat or a rollator, for use in providing support to injured or ailing persons during activity or movement. According to the present invention a solid two-piece seating platform is provided with a structural support for distributing the weight of the user to the frame. Furthermore, the two pieces of the seating platform are inter-hinged, enabling the entire device to fold up into a storage position. A lock is provided for maintaining the structural support in place, and a handle is provided for facilitating folding the device into the storage position.